TI - TRial registration required PT - JOUR DP - 2006 TA - Archives of Surgery pages = {496}, VI - 141 IP - 5 AID - 10.1001/archsurg.141.5.496 [doi] 4100 - http://dx.doi.org/10.1001/archsurg.141.5.496 SO - Archives of Surgery May 1, 2006 141(5):496