Hereditary cryptorchidism.
D001789:Blood Group Antigens; D002648:Child; D002675:Child, Preschool; D003241:Consanguinity; D003456:Cryptorchidism / Q000235:genetics* / Q000601:surgery; D006801:Humans; D008297:Male; D010375:Pedigree
D001789:Blood Group Antigens