[Effect of vitamin A in male sterility; preliminary note].
D006801:Humans; D007246:Infertility; D007248:Infertility, Male / Q000628:therapy*; D008297:Male; D014801:Vitamin A / Q000627:therapeutic use*
D014801:Vitamin A
STERILITY, MALE/therapy; VITAMIN A/therapeutic use
Influencia de la vitamina A sobre la esterilidad masculina; nota previa.