ABO and rhesus blood group distribution among patients attending veneral diseases clinics.
D000017:ABO Blood-Group System; D000328:Adult; D005260:Female; D006069:Gonorrhea / Q000097:blood*; D006801:Humans; D008297:Male; D012204:Rh-Hr Blood-Group System; D012606:Scotland; D013223:Statistics as Topic; D013587:Syphilis / Q000097:blood*; D014526:Urethritis / Q000097:blood*
D000017:ABO Blood-Group System; D012204:Rh-Hr Blood-Group System