title: Polyurethane-covered gel mammary implants.
mesh_terms: D001940:Breast / Q000601:surgery*; D006801:Humans; D008297:Male; D011140:Polyurethanes; D019736:Prostheses and Implants; D013518:Surgery, Plastic / Q000379:methods*
chemical_list: D011140:Polyurethanes