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Respiratory Consequences of prematurity and early disease

Hovedinnhold

  • Four regional Western Norway population based birth-cohorts who were born extremely preterm during 1982-85, 1991-1992, 1999-2000 and 2010-2018. Participants have regularly been brought in for testing, last time 2018-2019. 
  • A nationwide population based cohort born extremely preterm during 1999-2000 has been followed with testing until the age of 5 years, since then by questionnaires.
  • A regional Western Norway population based birth cohort hospitalized for bronchiolitis during their first year of life during 1996 to 2001. The cohort has been followed since birth, last seen at age 17-20 years

 

Peer review publications

  1. Lillebøe HL, Engeset MS, Clemm HH, Halvorsen T, Røksund OD, Potrebny T, Vollsæter M. Expiratory airflow limitation in adults born extremely preterm: A systematic review and meta-analysis. Paediatr Respir Rev. 2024 Jun;50:2-22. doi: 10.1016/j.prrv.2024.02.002. Epub 2024 Feb 16. PMID: 38490917.
  2. Halvorsen T. Ambient Air Pollution and Morbidities in Bronchopulmonary Dysplasia; It's All about the Money. Ann Am Thorac Soc. 2024 Jan;21(1):34-36. doi: 10.1513/AnnalsATS.202310-893ED. PMID: 38156899; PMCID: PMC10867906.
  3. Hov B, Andersen T, Toussaint M, Mikalsen IB, Vollsæter M, Brunborg C, Hovde M, Hovland V. Mechanically assisted cough strategies: user perspectives and cough flows in children with neurodisability. ERJ Open Res. 2024 Jan 8;10(1):00274-2023. doi: 10.1183/23120541.00274-2023. PMID: 38196892; PMCID: PMC10772903.
  4. Simpson SJ, Du Berry C, Evans DJ, Gibbons JTD, Vollsæter M, Halvorsen T, Gruber K, Lombardi E, Stanojevic S, Hurst JR, Um-Bergström P, Hallberg J, Doyle LW, Kotecha S; PELICAN. Unravelling the respiratory health path across the lifespan for survivors of preterm birth. Lancet Respir Med. 2024 Feb;12(2):167-180. doi: 10.1016/S2213-2600(23)00272-2. Epub 2023 Nov 14. PMID: 37972623.
  5. Budal EB, Bentsen MHL, Kessler J, Ebbing C, Lindemann PC, Haugen OH, Aukland SM, Eide GE, Halvorsen T, Collett K. Histologic chorioamnionitis in extremely preterm births, microbiological findings and infant outcome. J Matern Fetal Neonatal Med. 2023 Dec;36(1):2196599. doi: 10.1080/14767058.2023.2196599. PMID: 37031964.
  6. Bårdsen T, Røksund OD, Eagan TML, Hufthammer KO, Benestad MR, Clemm HSH, Halvorsen T, Vollsæter M. Impaired Lung Function in Extremely Preterm-Born Adults in Their Fourth Decade of Life. Am J Respir Crit Care Med. 2023 Aug 15;208(4):493-495. doi: 10.1164/rccm.202303-0448LE. PMID: 37187173; PMCID: PMC10449077.
  7. Sørensen KG, Øymar K, Halvorsen T, Mikalsen IB. Blood eosinophils during bronchiolitis were not associated with adult asthma in a Norwegian cohort study. Acta Paediatr. 2023 May;112(5):1124-1125. doi: 10.1111/apa.16710. Epub 2023 Feb 23. PMID: 36794990.
  8. Hov B, Andersen T, Toussaint M, Mikalsen IB, Vollsaeter M, Markussen H, Indrekvam S, Hovland V. User-perceived impact of long-term mechanical assisted cough in paediatric neurodisability. Dev Med Child Neurol. 2023 May;65(5):655-663. doi: 10.1111/dmcn.15543. Epub 2023 Feb 14. PMID: 36787316.
  9. Sørensen KG, Øymar K, Jonsson G, Dalen I, Halvorsen T, Mikalsen IB. Are BMI and adipokines associated with asthma, atopy and lung function in young adults previously hospitalized for bronchiolitis? Respir Med. 2023 Apr;209:107149. doi: 10.1016/j.rmed.2023.107149. Epub 2023 Feb 6. PMID: 36754217.
  10. Sørensen KG, Øymar K, Dalen I, Halvorsen T, Bruun Mikalsen I. Blood eosinophils during bronchiolitis: Associations with atopy, asthma and lung function in young adults. Acta Paediatr. 2023 Apr;112(4):820-829. doi: 10.1111/apa.16666. Epub 2023 Jan 20. PMID: 36627486.
  11. Benestad MR, Drageset J, Hufthammer KO, Vollsæter M, Halvorsen T, Vederhus BJ. Long-term follow-up of self-reported mental health and health-related quality of life in adults born extremely preterm. Early Hum Dev. 2022 Oct;173:105661. doi: 10.1016/j.earlhumdev.2022.105661. Epub 2022 Aug 31. PMID: 36067714.
  12. Benestad MR, Drageset J, Eide GE, Vollsæter M, Halvorsen T, Vederhus BJ. Development of health-related quality of life and subjective health complaints in adults born extremely preterm: a longitudinal cohort study. Health Qual Life Outcomes. 2022 Jul 23;20(1):112. doi: 10.1186/s12955-022-02018-5. PMID: 35870980; PMCID: PMC9308198.
  13. Bårdsen T, Røksund OD, Benestad MR, Hufthammer KO, Clemm HH, Mikalsen IB, Øymar K, Markestad T, Halvorsen T, Vollsæter M. Tracking of lung function from 10 to 35 years after being born extremely preterm or with extremely low birth weight. Thorax. 2022 Aug;77(8):790-798. doi: 10.1136/thoraxjnl-2021-218400. Epub 2022 Apr 11. PMID: 35410959; PMCID: PMC9340024.
  14. Satrell E, Clemm H, Røksund OD, Hufthammer KO, Thorsen E, Halvorsen T, Vollsæter M. Development of lung diffusion to adulthood following extremely preterm birth. Eur Respir J. 2022 May 19;59(5):2004103. doi: 10.1183/13993003.04103-2020. PMID: 34625479; PMCID: PMC9117733.
  15. Budal EB, Ebbing C, Kessler J, Bains S, Haugen OH, Aukland SM, Eide GE, Halvorsen T, Bentsen MHL, Collett K. Placental histology predicted adverse outcomes in extremely premature neonates in Norway-population-based study. Acta Paediatr. 2022 Mar;111(3):546-553. doi: 10.1111/apa.16198. Epub 2021 Dec 6. PMID: 34825402.
  16. Engan M, Engeset MS, Sandvik L, Gamlemshaug OCO, Engesæter IØ, Øymar K, Vollsæter M, Røksund OD, Hufthammer KO, Halvorsen T, Clemm HH. Left Vocal Cord Paralysis, Lung Function and Exercise Capacity in Young Adults Born Extremely Preterm With a History of Neonatal Patent Ductus Arteriosus Surgery-A National Cohort Study. Front Pediatr. 2022 Jan 3;9:780045. doi: 10.3389/fped.2021.780045. PMID: 35047462; PMCID: PMC8761768.
  17. Sørensen KG, Øymar K, Dalen I, Halvorsen T, Mikalsen IB. Asthma, atopy and lung function in young adults after hospitalisation for bronchiolitis in infancy: impact of virus and sex. BMJ Open Respir Res. 2022 Jan;9(1):e001095. doi: 10.1136/bmjresp-2021-001095. PMID: 35046087; PMCID: PMC8772454.
  18. Hoareau L, Engelsen AST, Aanerud M, Ramnefjell MP, Salminen PR, Gärtner F, Halvorsen T, Raeder H, Bentsen MHL. Induction of alveolar and bronchiolar phenotypes in human lung organoids. Physiol Rep. 2021 Jun;9(11):e14857. doi: 10.14814/phy2.14857. PMID: 34110705; PMCID: PMC8191394.
  19. Andersen TM, Hov B, Halvorsen T, Røksund OD, Vollsæter M. Upper Airway Assessment and Responses During Mechanically Assisted Cough. Respir Care. 2021 Jul;66(7):1196-1213. doi: 10.4187/respcare.08960. Epub 2021 Feb 12. PMID: 33579747.
  20. Mikalsen IB, Halvorsen T, Juliusson PB, Magnus M, Nystad W, Stensrud T, Størdal K, Vollsæter M, Øymar K. Early life growth and associations with lung function and bronchial hyperresponsiveness at 11-years of age. Respir Med. 2021 Feb;177:106305. doi: 10.1016/j.rmed.2021.106305. Epub 2021 Jan 8. PMID: 33482491.
  21. Kuiper IN, Svanes C, Markevych I, Accordini S, Bertelsen RJ, Bråbäck L, Heile Christensen J, Forsberg B, Halvorsen T, Heinrich J, Hertel O, Hoek G, Holm M, de Hoogh K, Janson C, Malinovschi A, Marcon A, Miodini Nilsen R, Sigsgaard T, Johannessen A. Lifelong exposure to air pollution and greenness in relation to asthma, rhinitis and lung function in adulthood. Environ Int. 2021 Jan;146:106219. doi: 10.1016/j.envint.2020.106219. Epub 2020 Oct 27. PMID: 33126061.
  22. Sørensen KG, Mikalsen IB, Neven A, Øymar K. Half of children with recurrent or chronic wet cough before three years of age were symptom-free by age seven. Acta Paediatr. 2020 Dec;109(12):2664-2670. doi: 10.1111/apa.15293. Epub 2020 Apr 22. PMID: 32271955.
  23. Sautter M, Halvorsen T, Engan M, Clemm H, Bentsen MHL. Electromagnetic inductance plethysmography to study airflow after nebulized saline in bronchiolitis. Pediatr Pulmonol. 2020 Dec;55(12):3437-3442. doi: 10.1002/ppul.25058. Epub 2020 Sep 15. PMID: 32897652.
  24. Mikalsen IB, Byberg K, Forman MR, Øymar K. Adipokines in adolescence; the associations with lung function and atopy - A cross-sectional study. Respir Med. 2020 Aug-Sep;170:106063. doi: 10.1016/j.rmed.2020.106063. Epub 2020 Jun 15. PMID: 32705985.
  25. Kuiper IN, Markevych I, Accordini S, Bertelsen RJ, Bråbäck L, Christensen JH, Forsberg B, Halvorsen T, Heinrich J, Hertel O, Hoek G, Holm M, de Hoogh K, Janson C, Malinovschi A, Marcon A, Sigsgaard T, Svanes C, Johannessen A. Associations of Preconception Exposure to Air Pollution and Greenness with Offspring Asthma and Hay Fever. Int J Environ Res Public Health. 2020 Aug 12;17(16):5828. doi: 10.3390/ijerph17165828. PMID: 32806543; PMCID: PMC7459891.
  26. Sørensen KG, Øymar K, Halvorsen T, Mikalsen IB. Reply to Korppi and Riikonen. Pediatr Allergy Immunol. 2020 Aug;31(6):720-721. doi: 10.1111/pai.13272. Epub 2020 Jun 8. PMID: 32383494.
  27. Engan M, Engeseth MS, Fevang S, Vollsæter M, Eide GE, Røksund OD, Halvorsen T, Clemm H. Predicting physical activity in a national cohort of children born extremely preterm. Early Hum Dev. 2020 Jun;145:105037. doi: 10.1016/j.earlhumdev.2020.105037. Epub 2020 Apr 11. PMID: 32438296.
  28. Engeseth MS, Engan M, Clemm H, Vollsæter M, Nilsen RM, Markestad T, Halvorsen T, Røksund OD. Voice and Exercise Related Respiratory Symptoms in Extremely Preterm Born Children After Neonatal Patent Ductus Arteriosus. Front Pediatr. 2020 Apr 8;8:150. doi: 10.3389/fped.2020.00150. PMID: 32322565; PMCID: PMC7156623.
  29. Duijts L, van Meel ER, Moschino L, Baraldi E, Barnhoorn M, Bramer WM, Bolton CE, Boyd J, Buchvald F, Del Cerro MJ, Colin AA, Ersu R, Greenough A, Gremmen C, Halvorsen T, Kamphuis J, Kotecha S, Rooney-Otero K, Schulzke S, Wilson A, Rigau D, Morgan RL, Tonia T, Roehr CC, Pijnenburg MW. European Respiratory Society guideline on long-term management of children with bronchopulmonary dysplasia. Eur Respir J. 2020 Jan 2;55(1):1900788. doi: 10.1183/13993003.00788-2019. PMID: 31558663.
  30. Sørensen KG, Øymar K, Dalen I, Halvorsen T, Mikalsen IB. Lung function and bronchial hyper-reactivity from 11 to 18 years in children with bronchiolitis in infancy. Pediatr Allergy Immunol. 2020 Jan;31(1):57-65. doi: 10.1111/pai.13137. Epub 2019 Oct 25. Erratum in: Pediatr Allergy Immunol. 2022 Dec;33(12): PMID: 31595542.
  31. Engan M, Vollsæter M, Øymar K, Markestad T, Eide GE, Halvorsen T, Juliusson P, Clemm H. Comparison of physical activity and body composition in a cohort of children born extremely preterm or with extremely low birth weight to matched term-born controls: a follow-up study. BMJ Paediatr Open. 2019 Jun 29;3(1):e000481. doi: 10.1136/bmjpo-2019-000481. PMID: 31338430; PMCID: PMC6613845.
  32. Doyle LW, Andersson S, Bush A, Cheong JLY, Clemm H, Evensen KAI, Gough A, Halvorsen T, Hovi P, Kajantie E, Lee KJ, McGarvey L, Narang I, Näsänen-Gilmore P, Steinshamn S, Vollsaeter M, Vrijlandt EJLE; Adults born Preterm International Collaboration. Expiratory airflow in late adolescence and early adulthood in individuals born very preterm or with very low birthweight compared with controls born at term or with normal birthweight: a meta-analysis of individual participant data. Lancet Respir Med. 2019 Aug;7(8):677-686. doi: 10.1016/S2213-2600(18)30530-7. Epub 2019 May 8. PMID: 31078498.
  33. Mikalsen IB, Dalen I, Karlstad Ø, Eide GE, Magnus M, Nystad W, Øymar K. Airway symptoms and atopy in young children prescribed asthma medications: A large-scale cohort study. Pediatr Pulmonol. 2019 Oct;54(10):1557-1566. doi: 10.1002/ppul.24437. Epub 2019 Jul 4. PMID: 31273956.
  34. Mikalsen IB, Nassehi D, Øymar K. Vortex Whistle and Smart Phone Application for Peak Flow Recordings in Asthmatic Children: A Feasibility Study. Telemed J E Health. 2019 Nov;25(11):1077-1082. doi: 10.1089/tmj.2018.0270. Epub 2018 Dec 20. PMID: 30570372; PMCID: PMC6842893.
  35. Halvorsen T. Our Tiny Preemies: What Will Become of Their Future Pulmonary Health? Ann Am Thorac Soc. 2018 Nov;15(11):1276-1278. doi: 10.1513/AnnalsATS.201808-579ED. PMID: 30382787.
  36. Kotecha S, Clemm H, Halvorsen T, Kotecha SJ. Bronchial hyper-responsiveness in preterm-born subjects: A systematic review and meta-analysis. Pediatr Allergy Immunol. 2018 Nov;29(7):715-725. doi: 10.1111/pai.12957. Epub 2018 Sep 5. PMID: 30014518.
  37. Hestnes J, Hoel H, Risa OJ, Romstøl HO, Røksund O, Frisk B, Thorsen E, Halvorsen T, Clemm HH. Ventilatory Efficiency in Children and Adolescents Born Extremely Preterm. Front Physiol. 2017 Jul 13;8:499. doi: 10.3389/fphys.2017.00499. PMID: 28751866; PMCID: PMC5508024.
  38. Skromme K, Vollsæter M, Øymar K, Markestad T, Halvorsen T. Respiratory morbidity through the first decade of life in a national cohort of children born extremely preterm. BMC Pediatr. 2018 Mar 7;18(1):102. doi: 10.1186/s12887-018-1045-7. PMID: 29514655; PMCID: PMC5840932.
  39. Bentsen MH, Markestad T, Halvorsen T. Ventilator flow data predict bronchopulmonary dysplasia in extremely premature neonates. ERJ Open Res. 2018 Mar 13;4(1):00099-2017. doi: 10.1183/23120541.00099-2017. PMID: 29546045; PMCID: PMC5847811.
  40. Clemm HH, Engeseth M, Vollsæter M, Kotecha S, Halvorsen T. Bronchial hyper-responsiveness after preterm birth. Paediatr Respir Rev. 2018 Mar;26:34-40. doi: 10.1016/j.prrv.2017.06.010. Epub 2017 Jun 20. PMID: 28709779.
  41. Byberg KK, Mikalsen IB, Eide GE, Forman MR, Júlíusson PB, Øymar K. The associations between weight-related anthropometrics during childhood and lung function in late childhood: a retrospective cohort study. BMC Pulm Med. 2018 Jan 19;18(1):10. doi: 10.1186/s12890-017-0567-3. PMID: 29351745; PMCID: PMC5775530.
  42. Øymar K, Mikalsen IB, Crowley S. K. Øymar og medarbeidere svarer. Tidsskr Nor Laegeforen. 2018 Jan 8;138(1). Norwegian. doi: 10.4045/tidsskr.17.1089. PMID: 29313607.
  43. Bentsen MH, Markestad T, Øymar K, Halvorsen T. Lung function at term in extremely preterm-born infants: a regional prospective cohort study. BMJ Open. 2017 Oct 25;7(10):e016868. doi: 10.1136/bmjopen-2017-016868. PMID: 29074512; PMCID: PMC5665228.
  44. Bentsen MH, Satrell E, Reigstad H, Johnsen SL, Vollsæter M, Røksund OD, Greve G, Berg A, Markestad T, Halvorsen T. Mid-childhood outcomes after pre-viable preterm premature rupture of membranes. J Perinatol. 2017 Sep;37(9):1053-1059. doi: 10.1038/jp.2017.97. Epub 2017 Jun 29. PMID: 28661513.
  45. Bjørke-Monsen AL, Vollsæter M, Ueland PM, Markestad T, Øymar K, Halvorsen T. Increased Bronchial Hyperresponsiveness and Higher Asymmetric Dimethylarginine Levels after Fetal Growth Restriction. Am J Respir Cell Mol Biol. 2017 Jan;56(1):83-89. doi: 10.1165/rcmb.2016-0210OC. PMID: 27574738.
  46. Bentsen MH, Eriksen M, Olsen MS, Markestad T, Halvorsen T. Electromagnetic inductance plethysmography is well suited to measure tidal breathing in infants. ERJ Open Res. 2016 Nov 24;2(4):00062-2016. doi: 10.1183/23120541.00062-2016. PMID: 28053968; PMCID: PMC5152798.
  47. Vollsæter M. Lungehelse etter ekstremt for tidlig fødsel. Tidsskr Nor Laegeforen. 2016 Sep 27;136(17):1475. Norwegian. doi: 10.4045/tidsskr.16.0643. PMID: 27686214.
  48. Clemm HS. Fysisk kapasitet hos ekstremt premature. Tidsskr Nor Laegeforen. 2016 Feb 23;136(4):340. Norwegian. doi: 10.4045/tidsskr.15.1325. PMID: 26905855.
  49. Vollsæter M, Skromme K, Satrell E, Clemm H, Røksund O, Øymar K, Markestad T, Halvorsen T. Children Born Preterm at the Turn of the Millennium Had Better Lung Function Than Children Born Similarly Preterm in the Early 1990s. PLoS One. 2015 Dec 7;10(12):e0144243. doi: 10.1371/journal.pone.0144243. PMID: 26641080; PMCID: PMC4671691.
  50. Mikalsen IB, Skeiseid L, Tveit LM, Engelsvold DH, Øymar K. Decline in admissions for childhood asthma, a 26-year period population-based study. Pediatr Allergy Immunol. 2015 Dec;26(8):750-5. doi: 10.1111/pai.12372. Epub 2015 May 7. PMID: 25787851.
  51. Bentsen MH, Haaland ØA, Lønning LB, Gudmundsdottir HK, Markestad T, Halvorsen T. A new non-invasive method of infant spirometry demonstrates a level of repeatability that is comparable to traditional methods. Acta Paediatr. 2015 Nov;104(11):1130-7. doi: 10.1111/apa.13155. PMID: 26287280.
  52. Clemm HH, Vollsaeter M, Røksund OD, Markestad T, Halvorsen T. Adolescents who were born extremely preterm demonstrate modest decreases in exercise capacity. Acta Paediatr. 2015 Nov;104(11):1174-81. doi: 10.1111/apa.13080. Epub 2015 Jul 28. PMID: 26096772.
  53. Skromme K, Leversen KT, Eide GE, Markestad T, Halvorsen T. Respiratory illness contributed significantly to morbidity in children born extremely premature or with extremely low birthweights in 1999-2000. Acta Paediatr. 2015 Nov;104(11):1189-98. doi: 10.1111/apa.13165. PMID: 26303868.
  54. Vollsæter M, Clemm HH, Satrell E, Eide GE, Røksund OD, Markestad T, Halvorsen T. Adult respiratory outcomes of extreme preterm birth. A regional cohort study. Ann Am Thorac Soc. 2015 Mar;12(3):313-22. doi: 10.1513/AnnalsATS.201406-285OC. PMID: 25616079.
  55. Clemm HH, Vollsæter M, Røksund OD, Eide GE, Markestad T, Halvorsen T. Exercise capacity after extremely preterm birth. Development from adolescence to adulthood. Ann Am Thorac Soc. 2014 May;11(4):537-45. doi: 10.1513/AnnalsATS.201309-311OC. PMID: 24502400.
  56. Øymar K, Bårdsen K. Continuous positive airway pressure for bronchiolitis in a general paediatric ward; a feasibility study. BMC Pediatr. 2014 May 12;14:122. doi: 10.1186/1471-2431-14-122. PMID: 24886569; PMCID: PMC4020573.
  57. Øymar K, Skjerven HO, Mikalsen IB. Acute bronchiolitis in infants, a review. Scand J Trauma Resusc Emerg Med. 2014 Apr 3;22:23. doi: 10.1186/1757-7241-22-23. PMID: 24694087; PMCID: PMC4230018.
  58. Mikalsen IB, Halvorsen T, Øymar K. Blood eosinophil counts during bronchiolitis are related to bronchial hyper-responsiveness and lung function in early adolescence. Acta Paediatr. 2014 Jan;103(1):86-92. doi: 10.1111/apa.12432. Epub 2013 Nov 11. PMID: 24117779.
  59. Satrell E, Røksund O, Thorsen E, Halvorsen T. Pulmonary gas transfer in children and adolescents born extremely preterm. Eur Respir J. 2013 Dec;42(6):1536-44. doi: 10.1183/09031936.00027112. Epub 2012 Nov 22. PMID: 23180590.
  60. Mikalsen IB, Halvorsen T, Eide GE, Øymar K. Severe bronchiolitis in infancy: can asthma in adolescence be predicted? Pediatr Pulmonol. 2013 Jun;48(6):538-44. doi: 10.1002/ppul.22675. Epub 2012 Sep 13. PMID: 22976850.
  61. Vollsæter M, Røksund OD, Eide GE, Markestad T, Halvorsen T. Lung function after preterm birth: development from mid-childhood to adulthood. Thorax. 2013 Aug;68(8):767-76. doi: 10.1136/thoraxjnl-2012-202980. Epub 2013 Jun 7. PMID: 23749815.
  62. Clemm H, Røksund O, Thorsen E, Eide GE, Markestad T, Halvorsen T. Aerobic capacity and exercise performance in young people born extremely preterm. Pediatrics. 2012 Jan;129(1):e97-e105. doi: 10.1542/peds.2011-0326. Epub 2011 Dec 26. PMID: 22201154.
  63. Farstad T, Bratlid D, Medbø S, Markestad T; Norwegian Extreme Prematurity Study Group. Bronchopulmonary dysplasia - prevalence, severity and predictive factors in a national cohort of extremely premature infants. Acta Paediatr. 2011 Jan;100(1):53-8. doi: 10.1111/j.1651-2227.2010.01959.x. PMID: 20653607.
  64. Øymar K, Halvorsen T. Emergency presentation and management of acute severe asthma in children. Scand J Trauma Resusc Emerg Med. 2009 Sep 4;17:40. doi: 10.1186/1757-7241-17-40. PMID: 19732437; PMCID: PMC2749010.
  65. Aukland SM, Rosendahl K, Owens CM, Fosse KR, Eide GE, Halvorsen T. Neonatal bronchopulmonary dysplasia predicts abnormal pulmonary HRCT scans in long-term survivors of extreme preterm birth. Thorax. 2009 May;64(5):405-10. doi: 10.1136/thx.2008.103739. Epub 2009 Jan 21. PMID: 19158126.
  66. Røsvik A, Øymar K, Kvaløy JT, Berget M. Oxygen saturation in healthy newborns; influence of birth weight and mode of delivery. J Perinat Med. 2009;37(4):403-6. doi: 10.1515/JPM.2009.070. PMID: 19292585.
  67. O'Byrne PM, Pedersen S, Lamm CJ, Tan WC, Busse WW; START Investigators Group. Severe exacerbations and decline in lung function in asthma. Am J Respir Crit Care Med. 2009 Jan 1;179(1):19-24. doi: 10.1164/rccm.200807-1126OC. Epub 2008 Oct 31. Erratum in: Am J Respir Crit Care Med. 2010 Oct 1;182(7):983-4. PMID: 18990678.
  68. Tollånes MC, Moster D, Daltveit AK, Irgens LM. Cesarean section and risk of severe childhood asthma: a population-based cohort study. J Pediatr. 2008 Jul;153(1):112-6. doi: 10.1016/j.jpeds.2008.01.029. Epub 2008 Mar 21. PMID: 18571547.
  69. Aaseboe K, Berstad AK, Skadberg BT. Noninvasive treatment of bronchomalacia, successful ventilation of a severely ill infant. Acta Paediatr. 2007 Feb;96(2):310-2. doi: 10.1111/j.1651-2227.2007.00041.x. PMID: 17429927.
  70. Reindal L, Øymar K. Hospital admissions for wheezing and asthma in childhood--are they avoidable? J Asthma. 2006 Dec;43(10):801-6. doi: 10.1080/02770900601034320. PMID: 17169835.
  71. Aukland SM, Halvorsen T, Fosse KR, Daltveit AK, Rosendahl K. High-resolution CT of the chest in children and young adults who were born prematurely: findings in a population-based study. AJR Am J Roentgenol. 2006 Oct;187(4):1012-8. doi: 10.2214/AJR.05.0383. PMID: 16985150.
  72. Halvorsen T, Skadberg BT, Eide GE, Røksund OD, Markestad T. Better care of immature infants; has it influenced long-term pulmonary outcome? Acta Paediatr. 2006 May;95(5):547-54. doi: 10.1080/08035250500477529. PMID: 16825134.
  73. Halvorsen T, Skadberg BT, Eide GE, Røksund O, Aksnes L, Øymar K. Characteristics of asthma and airway hyper-responsiveness after premature birth. Pediatr Allergy Immunol. 2005 Sep;16(6):487-94. doi: 10.1111/j.1399-3038.2005.00314.x. PMID: 16176395.
  74. Smith-Sivertsen T, Rørtveit G, Gulsvik A, Bakke PS, Skadberg B. Et tverrfaglig undervisningsopplegg om obstruktiv lungesykdom i allmennpraksis [An interdisciplinary educational program about pulmonary obstructive disease in family practice]. Tidsskr Nor Laegeforen. 2005 Feb 17;125(4):465. Norwegian. PMID: 15742027.
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