title: Monozygotic twins concordant for female-to-male transsexualism: a case report.
authors.forename: Hans
authors.initials: H
authors.lastname: Knoblauch
authors.forename: Andreas
authors.initials: A
authors.lastname: Busjahn
authors.forename: Bernhard
authors.initials: B
authors.lastname: Wegener
mesh_terms: D000328:Adult; D004200:Diseases in Twins; D005260:Female; D005783:Gender Identity; D006801:Humans; D008297:Male; D014189:Transsexualism; D014430:Twins, Monozygotic