[Clinical studies of methylcobalamine (CH3-B12) in oligozoospermic patients].
D004341:Drug Evaluation; D005260:Female; D006801:Humans; D008297:Male; D009845:Oligospermia / Q000188:drug therapy*; D011247:Pregnancy; D014805:Vitamin B 12 / Q000031:analogs & derivatives* / Q000627:therapeutic use
C019476:mecobalamin; D014805:Vitamin B 12