Comparison of thermal spread after ureteral ligation with the Laparo-Sonic ultrasonic shears and the Ligasure system. - Goldstein,S.L.; Harold,K.L.; Lentzner,A.; Matthews,B.D.; Kercher,K.W.; Sing,R.F.; Pratt,B.; Lipford,E.H.; Heniford,B.T. (J Laparoendosc Adv Surg Tech A, 2002)