title: Cigarette smoking and infertility in men.
mesh_terms: D000328:Adult; D006801:Humans; D007248:Infertility, Male / Q000209:etiology*; D008297:Male; D011869:Radioligand Assay; D012907:Smoking / Q000150:complications*; D013739:Testosterone / Q000097:blood*
chemical_list: D013739:Testosterone