Homosexuality and older brothers.
Eiberson
J L
JL
D001722:Birth Order; D005190:Family; D018451:Homosexuality, Male / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D010506:Periodicals as Topic / Q000592:standards; D011570:Psychiatry / Q000592:standards; D011643:Publishing / Q000592:standards; D012737:Sex Factors