title: Comparative study of 240 cases of cryosurgery using nitrogen protoxide and liquid nitrogen as coolant.
mesh_terms: D003452:Cryosurgery / Q000295:instrumentation / Q000379:methods*; D006487:Hemostasis; D006801:Humans; D008297:Male; D009584:Nitrogen; D009589:Nitrogen Oxides; D011470:Prostatic Hyperplasia / Q000601:surgery; D013525:Surgical Instruments; D013696:Temperature
chemical_list: D009589:Nitrogen Oxides; D009584:Nitrogen