“…Moreover, there is no clear difference according to sex for schizophrenia and manic-depressive psychosis. Three studies reported highest rates of schizophrenia for males (Akimoto et al, 1942;Brugger, 1933;Tsuwaga et al, 1942), and three for females (Bremer, 1951;Brugger, 1931;Helgason, 1964). Four studies (Akimoto et al, 1942;Bremer, 1951;Helgason, 1964;Tsuwaga et al, 1942) reported higher rates of manic-depressive psychosis for males, and two for females (Brugger, 1931(Brugger, , 1933.…”