TY - JOUR A1 - Sham, P. A1 - O'Callaghan, E. A1 - Takei, N. A1 - Murray, G. A1 - Har, E. A1 - Murray, R. T1 - Schizophrenia following pre-natal exposure to influenza epidemics between 1939 and 1960 Y1 - 1992 DO - 10.1192/bjp.160.4.461 JF - British Journal of Psychiatry VL - 160 IS - 4 ER -