title: Gonadal vein sampling in patients with idiopathic varicoceles. A preliminary communication.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D004958:Estradiol / Q000097:blood; D005640:Follicle Stimulating Hormone / Q000097:blood; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D008875:Middle Aged; D013737:Testis / Q000098:blood supply*; D013739:Testosterone / Q000097:blood; D014646:Varicocele / Q000097:blood*; D014680:Veins
chemical_list: D013739:Testosterone; D004958:Estradiol; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone