title: Smoking, sperm quality and testosterone level.
authors.forename: William H
authors.initials: WH
authors.lastname: James
mesh_terms: D006801:Humans; D008297:Male; D012907:Smoking / Q000009:adverse effects*; D013094:Spermatozoa / Q000502:physiology*; D013739:Testosterone / Q000097:blood*
chemical_list: D013739:Testosterone