title: A four year study of vasectomy on plasma levels of pituitary and sex hormones in normal males in Sri Lanka.
mesh_terms: D000328:Adult; D012739:Gonadal Steroid Hormones / Q000097:blood*; D006065:Gonadotropins, Pituitary / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014659:Vasectomy
chemical_list: D012739:Gonadal Steroid Hormones; D006065:Gonadotropins, Pituitary