A1. Gloth FM 3rd, Alam W, Hollis B. Vitamin D vs broad spectrum phototherapy in the treatment of seasonal affective disorder. J Nutr Health Aging. 1999;3(1):5-7.
A2. Penckofer S, Kouba J, Byrn M, Estwing Ferrans C. Vitamin D and depression: where is all the sunshine? Issues Ment Health Nurs. 2010;31(6):385-393.
A3. Kjærgaard M1, Waterloo K, Wang CE, et al. Effect of vitamin D supplement on depression scores in people with low levels of serum 25-hydroxyvitamin D: nested case-control study and randomised clinical trial. Br J Psychiatry. 2012;201(5):360-368.
A4. D. C. Kerr, D. T. Zava, W. T. Piper, S. R. Saturn, B. Frei, and A. F. Gombart, “Associations between vitamin D levels and depressive symptoms in healthy young adult women,” Psychiatry Research, vol. 227, no. 1, pp. 46–51, 2015.
A5. Melrose S. Seasonal affective disorder: an overview of assessment and treatment approaches. Depress Res Treat. 2015;2015:178564.
Negative air ionization therapy
B1. Terman M, Terman JS. Treatment of seasonal affective disorder with a high-output negative ionizer. J Altern Complement Med. 1995;1(1):87-92.
B2. Terman M, Terman JS, Ross DC. A controlled trial of timed bright light and negative air ionization for treatment of winter depression. Arch Gen Psychiatry. 1998;55(10):875-882.
B3. Terman M, Terman JS. Controlled trial of naturalistic dawn simulation and negative air ionization for seasonal affective disorder. Am J Psychiatry. 2006;163(12):2126-2133.
B4. Harmer CJ, Charles M, McTavish S, Favaron E, Cowen PJ. Negative ion treatment increases positive emotional processing in seasonal affective disorder. Psychol Med. 2012;42(8):1605-1612.
C1. Oren DA1, Teicher MH, Schwartz PJ, et al. A controlled trial of cyanocobalamin (vitamin B12) in the treatment of winter seasonal affective disorder. J Affect Disord. 1994;32(3):197-200.
C2. Almeida OP1, Ford AH1, Hirani V1, et al. B vitamins to enhance treatment response to antidepressants in middle-aged and older adults: results from the B-VITAGE randomised, double-blind, placebo-controlled trial. Br J Psychiatry. 2014;205(6):450-457.
C3. Almeida OP1, Ford AH1, Flicker L1. Systematic review and meta-analysis of randomized placebo-controlled trials of folate and vitamin B12 for depression. Int Psychogeriatr. 2015;27(5):727-737.
D1. Rosenthal NE, Sack DA, Jacobsen FM, et al. Melatonin in seasonal affective disorder and phototherapy. J Neural Transm Suppl. 1986;21:257-267.
D2. Wirz-Justice A, Graw P, Krauchi K, et al. Morning or night-time melatonin is ineffective in seasonal affective disorder. J Psychiatr Res. 1990;24:129–137.
D3. Lewy AJ, Bauer VK, Cutler NL, Sack RL. Melatonin treatment of winter depression: a pilot study. Psychiatry Res. 1998;77:57–61.
D4. Leppämäki S, Partonen T, Vakkuri O, Lönnqvist J, Partinen M, Laudon M. Effect of controlled-release melatonin on sleep quality, mood, and quality of life in subjects with seasonal or weather-associated changes in mood and behaviour. Eur Neuropsychopharmacol. 2003;13(3):137-145.
D5. Hansen MV, Danielsen AK, Hageman I, Rosenberg J, Gögenur I. The therapeutic or prophylactic effect of exogenous melatonin against depression and depressive symptoms: a systematic review and meta-analysis. Eur Neuropsychopharmacol. 2014;24(11):1719-1728.