Articles
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2024
Hjelmervik H, Hausmann M, Bless JJ, Harkestad N, Hugdahl K, Laloyaux J (2024). Estradiol driven change in hallucination proneness across the menstrual cycle as studied with a white noise paradigm. Psychoneuroendocrinology. Jan;159:106410.
2023
Bugge Kambestad O, Sirevåg K, Mrdalj J, Hovland A, Bruun Endal T, Andersson E, Sjøbø T, Haukenes Stavestrand S (2023). Physical Exercise and Serum BDNF Levels: Accounting for the Val66Met Polymorphism in Older Adults. Cogn Behav Neurol. Dec 1;36(4):219-227.
2022
Pedersen TT, Sunde E, Wisor J, Mrdalj J, Pallesen S, Grønli J (2022). Sleep Homeostasis and Night Work: A Polysomnographic Study of Daytime Sleep Following Three Consecutive Simulated Night Shifts. Nat Sci Sleep; 14:243-254
Sunde E, Mrdalj J, Pedersen TT, Bjorvatn B, Grønli J, Harris A, Waage S, Pallesen S (2022). Bright light exposure during simulated night work improves cognitive flexibility. Chronobiol Int; 39(7):948-963
Liset R, Grønli J, Henriksen RE, Henriksen TEG, Nilsen RM, Pallesen S (2022). A randomized controlled trial on the effects of blue-blocking glasses compared to partial blue-blockers on sleep outcomes in the third trimester of pregnancy. PLoS One; 17(1):e0262799.
Johansen VA, Milde AM, Nilsen RM, Breivik K, Nordanger D, Stormark KM, Weisæth L. (2022). The Relationship Between Perceived Social Support and PTSD Symptoms After Exposure to Physical Assault: An 8 Years Longitudinal Study. J Interpers Violence; 37:9-10
Vaisvilaite L, Hushagen V, Grønli J, Specht K (2022) Time-of-Day Effects in Resting-State Functional Magnetic Resonance Imaging: Changes in Effective Connectivity and Blood Oxygenation Level Dependent Signal. Brain Connect; 12(6):515-523.
Skeie-Larsen M, Stave R, Grønli J, Bjorvatn B, Wilhelmsen-Langeland A, Zandi A, Pallesen S (2022) The Effects of Pharmacological Treatment of Nightmares: A Systematic Literature Review and Meta-Analysis of Placebo-Controlled, Randomized Clinical Trials. Int J Environ Res Public Health. Dec 31;20(1):777
Vethe D, Drews HJ, Scott J, Engstrøm M, Heglum HSA, Grønli J, Wisor JP, Sand T, Lydersen S, Kjørstad K, Faaland PMP, Vestergaard CL, Langsrud K, Kallestad H (2022) Evening light environments can be designed to consolidate and increase the duration of REM-sleep. Sci Rep, May 24;12(1):8719
Pandi-Perumal SR, Kumar VM, Pandian NG, de Jong JT, Andiappan S, Corlateanu A, Mahalaksmi AM, Chidambaram SB, Kumar RR, Ramasubramanian C, Sivasubramaniam S, Bjørkum AA, Cutajar J, Berk M, Trakht I, Vrdoljak A, Meira E Cruz M, Eyre HA, Grønli J, Cardinali DP, Maercker A, van de Put WACM, Guzder J, Bjorvatn B, Tol WA, Acuña-Castroviejo D, Meudec M, Morin CM, Partinen M, Barbui C, Jordans MJD, Braakman MH, Knaevelsrud C, Pallesen S, Sijbrandij M, Golombek DA, Espie CA, Cuijpers P, Agudelo HAM, van der Velden K, van der Kolk BA, Hobfoll SE, Devillé WLJM, Gradisar M, Riemann D, Axelsson J, Benítez-King G, Macy RD, Poberezhets V, Hoole SRH, Murthy RS, Hegemann T, Heinz A, Salvage J, McFarlane AC, Keukens R, de Silva H, Oestereich C, Wilhelm J, von Cranach M, Hoffmann K, Klosinski M, Bhugra D, Seeman MV (2022). Scientists Against War: A Plea to World Leaders for Better Governance. Sleep Vigil; 6(1):1-6
2021
Milde AM, Gramm HB, Paaske I, Kleiven PG, Christiansen O, Havnen KJS (2021). Suicidality among children and youth in Nordic child welfare services: A systematic review. Child Fam Soc Work
Liset R, Grønli J, Henriksen RE, Henriksen TEG, Nilsen RM, Pallesen S (2021) Sleep, evening light exposure and perceived stress in healthy nulliparous women in the third trimester of pregnancy. PLoS One;16(6):e0252285.
Liset R, Grønli J, Henriksen RE, Henriksen TEG, Nilsen RM, Pallesen S (2021). A randomized controlled trial on the effect of blue-blocking glasses compared to partial blue-blockers on melatonin profile among nulliparous women in third trimester of the pregnancy. Neurobiol Sleep Circadian Rhythms;12:100074
Bless JJ, Hugdahl K, Kråkvik B, Vedul-Kjelsås E, Kalhovde AM, Grønli J, Larøy F (2021) In the twilight zone: An epidemiological study of sleep-related hallucinations. Compr Psychiatry;108:152247.
Wisor JP, Holmedahl NH, Saxvig IW, Fjeldstad OM, Weitzberg E, Grønli J, Engan HK (2021) Effect of Dietary Nitrate Supplementation on Sleep in Chronic Obstructive Pulmonary Disease Patients. Nat Sci Sleep;13:435-46.
2020
Marti AR, Pedersen T, Wisor JP, Mrdalj J, Holmelid Ø, Patil S, Meerlo P, Bramham CR, Grønli J. (2020). Cognitive function and brain plasticity in a rat model of shift work: role of daily rhythms, sleep and glucocorticoids. Sci Rep, 10(1), 13141.
Sunde E, Mrdalj J, Pedersen T, Thun E, Bjorvatn B, Grønli J, Harris A, Waage S, Pallesen S. (2020). Role of nocturnal light intensity on adaptation to three consecutive night shifts: a counterbalanced crossover study. Occup Environ Med, 77(4), 249-255.
Sunde E, Pedersen T, Mrdalj J, Thun E, Grønli J, Harris A, Bjorvatn, B, Waage S, Skene DJ, Pallesen S. (2020a). Alerting and Circadian Effects of Short-Wavelength vs. Long-Wavelength Narrow-Bandwidth Light during a Simulated Night Shift. Clocks Sleep, 2(4): 502-522.
Sunde E, Pedersen T, Mrdalj J, Thun E, Grønli J, Harris A, Bjorvatn, B, Waage S, Skene DJ, Pallesen S. (2020). Blue-Enriched White Light Improves Performance but Not Subjective Alertness and Circadian Adaptation During Three Consecutive Simulated Night Shifts. Front Psychol, 11, 2172.
Albaek AU, Binder PE, Milde AM (2020). Plunging Into a Dark Sea of Emotions: Professionals' Emotional Experiences Addressing Child Abuse in Interviews With Children. Qual Health Res 30(8): 1212-1224.
Ousdal OT, Milde AM, Hafstad GS, Hodneland E, Dyb G, Craven AR, Melinder A, Endestad T, Hugdahl K. (2020). The association of PTSD symptom severity with amygdala nuclei volumes in traumatized youths. Transl Psychiatry 10(1): 288.
Steine IM, Nielsen B, Porter PA, Krystal JH, Winje D, Grønli J, Milde AM, Bjorvatn B, Nordhus IH, Pallesen S. (2020). Predictors and correlates of lifetime and persistent non-suicidal self-injury and suicide attempts among adult survivors of childhood sexual abuse. Eur J Psychotraumatol, 11(1):1815282.
Steine IM, Winje D, Krystal JH, Milde AM, Bjorvatn B, Nordhus IH, Grønli J, Pallesen S. (2020). Longitudinal Relationships between Perceived Social Support and Symptom Outcomes: Findings from a sample of Adult Survivors of Childhood Sexual Abuse. Child Abuse Negl, 107, 104566.
Toften S, Pallesen S, Hrozanova M, Moen F, Grønli, J. (2020). Validation of sleep stage classification using non-contact radar technology and machine learning (Somnofy®). Sleep Med, 75, 54-61.
Hansen AL, Ambroziak G, Thornton D, Mundt JC, Kahn RE, Dahl L, Waage L, Kattenbraker D, Araujo P, Murison R, Rypdal K, Grung B. (2020) Vitamin D Supplementation during Winter: Effects on Stress Resilience in a Randomized Control Trial, Nutrients 12(11):3258.
Henriksen TEG, Grønli J, Assmus J, Fasmer OB, Schøyen H, Leskauskaite I, Bjørke-Bertheussen J, Ytrehus K, Lund A. (2020) Blue-blocking glasses as additive treatment for mania: effects on actigraphy-derived sleep parameters, J Sleep Res, 29(5), e12984.
2019
Kalliokoski O, Jellestad FK, Murison R (2019) A systematic review of studies utilizing hair glucocorticoids as a measure of stress suggests the marker is more appropriate for quantifying short-term stressors. Sci Rep. 9(1):11997
Henriksen RE, Nilsen RM, Strandberg RB (2019) Loneliness as a risk factor for metabolic syndrome: results from the HUNT study J Epidemiol Community Health.73:941-946.
Holmedahl NH, Fjeldstad OM, Engan H, Saxvig IW, Grønli J (2019) Validation of peripheral arterial tonometry as tool for sleep assessment in chronic obstructive pulmonary disease. Sci Rep. 9(1):19392.
Steine IM, Skogen JC, Krystal JH, Winje D, Milde AM, Grønli J, Nordhus IH, Bjorvatn B, Pallesen S (2019) Insomnia symptom trajectories among adult survivors of childhood sexual abuse: A longitudinal study. Child Abuse Negl. 93:263-276.
Albaek AU, Binder PE, Milde AM. (2019) Entering an emotional minefield: professionals' experiences with facilitators to address abuse in child interviews. BMC Health Serv Res. 19(1):302.
2018
Grønli J, Mrdalj J. (2018). Can night shift workers benefit from light exposure? The Journal of physiology. 596(12):2269-2270.
Grønli J, Schmidt M, Wisor JP. (2018). State-dependent modulation of visual evoked potentials in a rodent genetic model of electroencephalographic instability. Frontiers in Systems Neuroscience 12: 36.
Pallesen S, Grønli J, Myhre K, Moen F, Bjorvatn B, Hanssen I, Heglum HSA. (2018). A Pilot Study of Impulse Radio Ultra Wideband Radar Technology as a New Tool for Sleep Assessment. J Clin Sleep Med 14(7):1249-1254.
Pallesen S, Olsen OK, Eide EM, Nortvedt B, Grønli J, Larøi F, Nordmo M, Glomlien FE (2018). Sleep deprivation and hallucinations. A qualitative study of military personnel. Military Psychology: 1-7.
Rempe MJ, Grønli J, Pedersen TT, Mrdalj J, Marti AR, Meerlo P, Wisor JP. (2018). Mathematical modeling of sleep state dynamics in a rodent model of shift work Neurobiology of Sleep and Circadian Rhythms 5:37-51
Zak N, Moberget T, Boen E, Boye B, Waage TR, Dietrichs E, Harkestad N, Malt UF, Westlye LT, Andreassen OA, Andersson S, Elvsashagen T. (2018). Longitudinal and cross-sectional investigations of long-term potentiation-like cortical plasticity in bipolar disorder type II and healthy individuals. Transl Psychiatry 8(1): 103.
Gjerde PB, Dieset I, Simonsen C, Hoseth EZ, Iversen T, Lagerberg TI, Lyngstad SH, Mørch RH, Skrede S, Andreassen OA, Melle I, Steen VM. (2018). Increase in serum HDL level is associated with less negative symptoms after one year of antipsychotic treatment in first-episode psychosis. Schizophr Res. 197:253-260.
Krane-Gartiser K, Henriksen TEG, Morken G, Vaaler AE, Fasmer OB. (2018). Motor activity patterns in acute schizophrenia and other psychotic disorders can be differentiated from bipolar mania and unipolar depression. Psychiatry Res. 270:418-425.
Benedetti F, Avery DH, Bauer M, Bunney WE, Çaliyurt O, Camardese G, Colombo C, Dallaspezia S, Henriksen TE, Kasper S, Kuriyama K, Lam RW, Martiny K, Meesters Y, Mishima K, Schulte R, Suzuki M, Święcicki Ł, Uchiyama M, Veale D, Winkler D, Wu J, Kupeli NY, Yoshiike T, Yu X. (2018). Evidence for the Efficacy of Bright Light Therapy for Bipolar Depression. Am J Psychiatry. 175(9):905-906.
Ousdal OT, Milde AM, Craven AR, Ersland L, Endestad T, Melinder A, Huys QJ, Hugdahl K. (2018). Prefrontal glutamate levels predict altered amygdala-prefrontal connectivity in traumatized youths. Psychol Med. 1-9. [Epub ahead of print]
Albaek AU, Kinn LG, Milde AM. (2018). Walking Children Through a Minefield: How Professionals Experience Exploring Adverse Childhood Experiences. Qual Health Res. 28(2):231-244
Ousdal OT, Huys QJ, Milde AM, Craven AR, Ersland L, Endestad T, Melinder A, Hugdahl K, Dolan RJ. (2018). The impact of traumatic stress on Pavlovian biases. Psychol Med. 48(2):327-336.
2017
Marti AR, Patil S, Mrdalj J, Meerlo P, Skrede S, Pallesen S, Pedersen T, Bramham CR, Grønli J. (2017). No Escaping the Rat Race: Simulated Night Shift Work Alters the Time-of-Day Variation in BMAL1 Translational Activity in the Prefrontal Cortex. Frontiers in Neural Circuits 11(70).
Grønli J, Melinder A, Ousdal OT, Pallesen S, Endestad T, Milde AM. (2017). Life Threat and Sleep Disturbances in Adolescents: A Two-Year Follow-Up of Survivors From the 2011 Utøya, Norway, Terror Attack. J Trauma Stress 30(3):219-228
Kinn Rød AM, Harkestad N, Jellestad FK, Murison R. (2017). Comparison of commercial ELISA assays for quantification of corticosterone in serum. Sci Rep 7(1): 6748.
Gronli J, Meerlo P, Pedersen TT, Pallesen S, Skrede S, Marti AR, Wisor JP, Murison R, Henriksen TE, Rempe MJ, Mrdalj J. (2017). A Rodent Model of Night-Shift Work Induces Short-Term and Enduring Sleep and Electroencephalographic Disturbances. J Biol rhythms 32(1): 48-63.
Ousdal OT, Huys QJ, Milde AM, Craven AR, Ersland L, Endestad T, Melinder A, Hugdahl K, Dolan RJ. (2017). The impact of traumatic stress on Pavlovian biases. Psychol Med: 1-10.
Bjorvatn B, Mrdalj J, Saxvig IW, Aasnæs T, Pallesen S, Waage S. (2017). Age and sex differences in bedroom habits and bedroom preferences. Sleep Med 32:157-161.
Steine IM, Winje D, Skogen JC, Krystal JH, Milde AM, Bjorvatn B, Nordhus IH, Grønli J, Pallesen S. (2017). Posttraumatic symptom profiles among adult survivors of childhood sexual abuse: A longitudinal study. Child Abuse Negl 67:280-293
Steine IM, Winje D, Krystal JH, Bjorvatn B, Milde AM, Grønli J, Nordhus IH, Pallesen S. (2017). Cumulative childhood maltreatment and its dose-response relation with adult symptomatology: Findings in a sample of adult survivors of sexual abuse. Child Abuse Negl 65: 99-111.
2016
Gronli J, Clegern WC, Schmidt MA, Nemri RS, Rempe MJ, Gallitano AL, Wisor JP. (2016). Sleep Homeostatic and Waking Behavioral Phenotypes in Egr3-Deficient Mice Associated with Serotonin Receptor 5-HT2 Deficits. Sleep 39(12): 2189-2199.
Marti AR, Meerlo P, Gronli J, van Hasselt SJ, Mrdalj J, Pallesen S, Pedersen TT, Henriksen TEG, Skrede S. (2016). Shift in Food Intake and Changes in Metabolic Regulation and Gene Expression during Simulated Night-Shift Work: A Rat Model. Nutrients 8(11).
Mrdalj J, Murison R, Soule J, Rod AMK, Milde AM, Pallesen S, Gronli J. (2016). Mild daily stressors in adulthood may counteract behavioural effects after constant presence of mother during early life. Physiol Behav 165: 313-321.
Gronli J, Byrkjedal IK, Bjorvatn B, Nodtvedt O, Hamre B, Pallesen S. (2016). Reading from an iPad or from a book in bed: the impact on human sleep. A randomized controlled crossover trial. Sleep Med 21: 86-92.
Gronli J, Rempe MJ, Clegern W, Schmidt M, Wisor JP. (2016). Beta EEG reflects sensory processing in active wakefulness and homeostatic sleep drive in quiet wakefulness. J Sleep Res 25(3): 257-268.
Steine IM, Zayats T, Stansberg C, Pallesen S, Mrdalj J, Havik B, Soule J, Haavik J, Milde AM, Skrede S, Murison R, Krystal J, Gronli J. (2016). Implication of NOTCH1 gene in susceptibility to anxiety and depression among sexual abuse victims. Transl Psychiat 6(12):e977
Blagestad T, Pallesen S, Gronli J, Tang NKY, Nordhus IH. (2016). How Perceived pain Influence sleep and Mood More Than The Reverse: A Novel, Exploratory Study with Patients Awaiting Total Hip Arthroplasty. Front Psychol 7:1689
Pallesen S, Gronli J. (2016). The impact of e-reading on sleep. Sleep Med 23: 109-110.
Hossain JA, Ystaas LR, Mrdalj J, Välk K, Riecken K, Fehse B, Bjerkvig R, Grønli J, Miletic H. (2016) Lentiviral HSV-Tk.007-mediated suicide gene therapy is not toxic for normal brain cells. J Gene Med. 18(9):234-43.
Henriksen TEG, Skrede S, Fasmer OB, Schoeyen H, Leskauskaite I, Bjorke-Bertheussen J, Assmus J, Hamre B, Gronli J, Lund A. (2016). Blue-blocking glasses as additive treatment for mania: a randomized placebo-controlled trial. Bipolar Disord 18(3): 221-232.
Blagestad T, Nordhus IH, Gronli J, Engesaeter LB, Ruths S, Ranhoff AH, Bjorvatn B, Pallesen S. (2016). Prescription trajectories and effect of total hip arthroplasty on the use of analgesics, hypnotics, antidepressants, and anxiolytics: results from a population of total hip arthroplasty patients. Pain 157(3): 643-651.
Pallesen S, Bjorvatn B, Grønli J. (2016). Behandling av mareritt. En systematisk narrativ oversikt over randomiserte behandlingsstudier. Tidsskrift for Norsk Psykologforening. 53(9): 716-726
Steine IM, Winje D, Nordhus IH, Milde AM, Bjorvatn B, Grønli J, Pallesen S. (2016) Langvarig taushet om seksuelle overgrep: Prediktorer og korrelater hos voksne som opplevde seksuelle overgrep som barn. Tidsskrift for Norsk Psykologforening 53(11): 888-899
2015
Hansson PB, Murison R, Lund A, Hammar A. (2015). Cognitive functioning and cortisol profiles in first episode major depression. Scand J Psychol 56(4): 379-83.
Breivik T, Gundersen Y, Murison R, Turner JD, Muller CP, Gjermo P, et al. (2015). Maternal Deprivation of Lewis Rat Pups Increases the Severity of Experi-mental Periodontitis in Adulthood. Open Dent J 9: 65-78.
2014
Mrdalj J, Lundegaard Mattson A, Murison R, Konow Jellestad F, Milde AM, Pallesen S, et al. (2014). Hypothermia after chronic mild stress exposure in rats with a history of postnatal maternal separations. Chronobiol Int 31(2): 252-64.
Kinn Rod AM, Murison R, Mrdalj J, Milde AM, Jellestad FK, Overnes LA, et al. (2014). Effects of social defeat on sleep and behaviour: importance of the confrontational behaviour. Physiol Behav 127: 54-63.
Bjorvatn B, Pallesen S, Gronli J, Sivertsen B, Lehmann S. (2014). Prevalence and correlates of insomnia and excessive sleepiness in adults with obstructive sleep apnea symptoms. Percept Mot Skills 118(2): 571-86.
Henriksen TE, Skrede S, Fasmer OB, Hamre B, Gronli J, Lund A. (2014). Blocking blue light during mania - markedly increased regularity of sleep and rapid improvement of symptoms: a case report. Bipolar Disord 16(8): 894-8.
Byrkjedal IK, Pallesen S, Bjorvatn B, Nodtvedt OO, Gronli J. (2014). An experimental study comparing the effects of reading on an Ipad or in a book on polysomnographic-assessed sleep. Journal of Sleep Research 23: 263-.
Morkved N, Hartmann K, Aarsheim LM, Holen D, Milde AM, Bomyea J, et al. (2014). A comparison of Narrative Exposure Therapy and Prolonged Exposure therapy for PTSD. Clin Psychol Rev 34(6): 453-67.
2013
Gronli J, Soule J, Bramham CR. (2013). Sleep and protein synthesis-dependent synaptic plasticity: impacts of sleep loss and stress. Front Behav Neurosci 7: 224.
Mrdalj J, Pallesen S, Milde AM, Jellestad FK, Murison R, Ursin R, et al. (2013). Early and later life stress alter brain activity and sleep in rats. PLoS One 8(7): e69923.
Overmier JB, Murison R. (2013). Restoring psychology's role in peptic ulcer. Appl Psychol Health Well Being 5(1): 5-27.
Hansson PB, Murison R, Lund A, Hammar A. (2013). Cognitive functioning and cortisol suppression in recurrent major depression. Psych J 2(3): 167-74.
Smart NA, Murison R. (2013). Rate of change in physical fitness and quality of life and depression following exercise training in patients with congestive heart failure. Congest Heart Fail 19(1): 1-5.
Azak S, Murison R, Wentzel-Larsen T, Smith L, Gunnar MR. (2013). Maternal depression and infant daytime cortisol. Dev Psychobiol 55(4): 334-51.
Skeie BS, Wang J, Dodoo E, Heggdal JI, Gronli J, Sleire L, et al. (2013). Gamma knife surgery as monotherapy with clinically relevant doses prolongs survival in a human GBM xenograft model. Biomed Res Int 2013: 139674.
Flo E, Pallesen S, Akerstedt T, Mageroy N, Moen BE, Gronli J, et al. (2013). Shift-related sleep problems vary according to work schedule. Occup Environ Med 70(4): 238-45.
2012
Gronli J, Dagestad G, Milde AM, Murison R, Bramham CR. (2012). Post-transcriptional effects and interactions between chronic mild stress and acute sleep deprivation: regulation of translation factor and cytoplasmic polyadenylation element-binding protein phosphorylation. Behav Brain Res 235(2): 251-62.
Kinn Rod AM, Milde AM, Gronli J, Jellestad FK, Sundberg H, Murison R. (2012). Long-term effects of footshock and social defeat on anxiety-like behaviours in rats: relationships to pre-stressor plasma corticosterone concentration. Stress 15(6): 658-70.
Oines E, Murison R, Mrdalj J, Gronli J, Milde AM. (2012). Neonatal maternal separation in male rats increases intestinal permeability and affects behavior after chronic social stress. Physiol Behav 105(4): 1058-66.
Steine IM, Krystal JH, Nordhus IH, Bjorvatn B, Harvey AG, Eid J, et al. (2012). Insomnia, nightmare frequency, and nightmare distress in victims of sexual abuse: the role of perceived social support and abuse characteristics. J Interpers Violence 27(9): 1827-43.
Steine IM, Harvey AG, Krystal JH, Milde AM, Gronli J, Bjorvatn B, et al. (2012). Sleep disturbances in sexual abuse victims: a systematic review. Sleep Med Rev 16(1): 15-25.
Lied GA, Milde AM, Nylund K, Mujic M, Grimstad T, Hausken T, et al. (2012). Increased wall thickness using ultrasonography is associated with inflammation in an animal model of experimental colitis. Clin Exp Gastroenterol 5: 195-201.
Johnsen BH, Hansen AL, Murison R, Eid J, Thayer JF. (2012). Heart rate variability and cortisol responses during attentional and working memory tasks in naval cadets. Int Marit Health 63(4): 181-7.
Flo E, Pallesen S, Mageroy N, Moen BE, Gronli J, Hilde Nordhus I, et al. (2012). Shift work disorder in nurses--assessment, prevalence and related health problems. PLoS One 7(4): e33981.
Flo E, Bjorvatn B, Folkard S, Moen BE, Gronli J, Nordhus IH, et al. (2012). A reliability and validity study of the Bergen Shift Work Sleep Questionnaire in nurses working three-shift rotations. Chronobiol Int 29(7): 937-46.
Blagestad T, Pallesen S, Lunde LH, Sivertsen B, Nordhus IH, Gronli J. (2012). Sleep in older chronic pain patients: a comparative polysomnographic study. Clin J Pain 28(4): 277-83.
