AU - Livingston EH TI - HOw surgical residents spend their training time—invited critique PT - JOUR DP - 2007 TA - Archives of Surgery pages = {252}, VI - 142 IP - 3 AID - 10.1001/archsurg.142.3.252 [doi] 4100 - http://dx.doi.org/10.1001/archsurg.142.3.252 SO - Archives of Surgery March 1, 2007 142(3):252