O brother, where art thou? The fraternal birth-order effect on male sexual orientation.
Puts
David A
DA
Neuroscience Program and Psychology Department, Michigan State University, East Lansing, MI 48824-1101, USA.
Jordan
Cynthia L
CL
Breedlove
S Marc
SM
D001722:Birth Order / Q000523:psychology; D005260:Female; D018451:Homosexuality, Male / Q000523:psychology; D006801:Humans; D008297:Male; D011247:Pregnancy; D012725:Sexual Behavior / Q000502:physiology* / Q000523:psychology; D035781:Siblings / Q000523:psychology*; D013739:Testosterone / Q000502:physiology
D013739:Testosterone