Buck C, Simpson H
Br J Psychiatry. 1978 Oct;133:358-60. doi: 10.1192/bjp.133.4.358.
The season of birth distribution of 1,039 sibs of Canadian schizophrenic patients was compared with that of births in the Canadian general population over the same time period. The excess of winter births observed among the schizophrenics was not found among their sibs.
将1039名加拿大精神分裂症患者的同胞的出生季节分布与同一时期加拿大普通人群的出生情况进行了比较。在精神分裂症患者中观察到的冬季出生人数过多的情况在他们的同胞中并未发现。