Epididymal obstruction: the frequency in elderly men.
D000368:Aged; D002369:Castration; D002465:Cell Movement; D004822:Epididymis / Q000473:pathology / Q000601:surgery; D005832:Genital Diseases, Male / Q000453:epidemiology / Q000473:pathology; D006801:Humans; D008297:Male; D011471:Prostatic Neoplasms / Q000601:surgery; D013094:Spermatozoa / Q000502:physiology