• 1
    Davies G, Welham JL, Chant D, Torrey EF, McGrath JJ. A systematic review and meta-analysis of Northern Hemisphere season of birth studies in schizophrenia. Schizophr. Bull. 2003; 29: 587593.
  • 2
    Kunugi H, Nanko S, Hayashi N, Saito K, Hirose T, Kazamatsuri H. Season of birth of schizophrenics in a recent Japanese sample. Psychiatry Clin. Neurosci. 1997; 51: 213216.
  • 3
    Berk M, Terre-Blanche MJ, Maude C, Lucas MD, Mendelsohn M, O'Neill-Kerr AJ. Season of birth and schizophrenia: Southern hemisphere data. Aust. N. Z. J. Psychiatry 1996; 30: 220222.
  • 4
    McGrath JJ, Welham JL. Season of birth and schizophrenia: A systematic review and meta-analysis of data from the Southern Hemisphere. Schizophr. Res. 1999; 35: 237242.
  • 5
    Torrey EF, Miller J, Rawlings R, Yolken RH. Seasonality of births in schizophrenia and bipolar disorder: A review of the literature. Schizophr. Res. 1997; 28: 138.
  • 6
    Pjrek E, Winkler D, Heiden A et al. Seasonality of birth in seasonal affective disorder. J. Clin. Psychiatry 2004; 65: 13891393.
  • 7
    Natale V, Adan A, Chotai J. Season of birth modulates mood seasonality in humans. Psychiatry Res. 2007; 153: 199201.
  • 8
    Tonetti L, Fabbri M, Martoni M, Natale V. Season of birth and mood seasonality in late childhood and adolescence. Psychiatry Res. 2012; 195: 6668.
  • 9
    Eagles JM, Scott NW, Cameron IM, Wileman SM, Naji SA. Dates of birth and seasonal changes in well-being among 4904 subjects completing the seasonal pattern assessment questionnaire. J. Affect. Disord. 2007; 104: 161165.
  • 10
    Eagles JM, Howie FL, Cameron IM et al. Use of health care services in seasonal affective disorder. Br. J. Psychiatry 2002; 180: 449454.
  • 11
    Pjrek E, Winkler D, Praschak-Rieder N et al. Season of birth in siblings of patients with seasonal affective disorder – A test of the parental conception habits hypothesis. Eur. Arch. Psychiatry Clin. Neurosci. 2007; 257: 378382.
  • 12
    Natale V, Adan A, Scapellato P. Are seasonality of mood and eveningness closely associated? Psychiatry Res. 2005; 136: 5160.
  • 13
    Tonetti L, Fabbri M, Martoni M, Natale V. Circadian type and mood seasonality in adolescents. Psychiatry Clin. Neurosci. 2012; 66: 157159.
  • 14
    Natale V, Di Milia L. Season of birth and morningness: Comparison between the northern and southern hemispheres. Chronobiol. Int. 2011; 28: 727730.
  • 15
    Tonetti L, Fabbri M, Martoni M, Natale V. Season of birth and sleep-timing preferences in adolescents. Chronobiol. Int. 2011; 28: 536540.
  • 16
    Muscettola G, Barbato G, Ficca G, Puca M, Aguglia E, Amati A. Seasonality of mood in Italy: Role of latitude and sociocultural factors. J. Affect. Disord. 1995; 33: 135139.
  • 17
    Natale V, Danesi E, Scapellato P. An Italian version of Seasonal Pattern Assessment Questionnaire (SPAQ). Testing Psicometria Metodologia 2003; 10: 3342 (in Italian).
  • 18
    Rosenthal NE, Bradt GH, Wehr TA. Seasonal Pattern Assessment Questionnaire (SPAQ). National Institute of Mental Health, Bethesda, 1984.
  • 19
    Parslow RA, Jorn AF, Butterworth P, Jacomb PA, Rodgers B. An examination of seasonality experienced by Australians living in a continental temperate climate zone. J. Affect. Disord. 2004; 80: 181190.
  • 20
    Tonetti L, Barbato G, Fabbri M, Adan A, Natale V. Mood seasonality: A cross-sectional study of subjects aged between 10 and 25 years. J. Affect. Disord. 2007; 97: 155160.
  • 21
    Chotai J, Smedh K, Johansson C, Nilson LG, Adolfsson R. An epidemiological study on gender differences in self-reported seasonal changes in mood and behaviour in a general population of northern Sweden. Nord. J. Psychiatr. 2004; 58: 429437.
  • 22
    Natale V, Adan A. Season of birth modulates morningness-eveningness preference in humans. Neurosci. Lett. 1999; 274: 139141.
  • 23
    Natale V, Adan A, Chotai J. Further results on the association between morningness-eveningness preference and the season of birth in human adults. Neuropsychobiology 2002; 46: 209214.
  • 24
    Peel MC, Finlayson BL, McMahon TA. Updated world map of the Köppen–Geiger climate classification. Hydrol. Earth Syst. Sci. 2007; 11: 16331644.
  • 25
    Avasthi A, Sharma A, Gupta N et al. Seasonality and affective disorders: A report from North India. J. Affect. Disord. 2001; 64: 145154.
  • 26
    Walton JC, Weil ZM, Nelson RJ. Influence of photoperiod on hormones, behavior, and immune function. Front. Neuroendocrinol. 2011; 32: 303319.