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Season of birth among the sibs of schizophrenics
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.
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.