Serum-cholesterol and ABO and rhesus blood-groups.
D000017:ABO Blood-Group System; D000328:Adult; D000367:Age Factors; D002784:Cholesterol / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012204:Rh-Hr Blood-Group System
D000017:ABO Blood-Group System; D012204:Rh-Hr Blood-Group System; D002784:Cholesterol