TI - MAintenance of certification PT - JOUR DP - 2009 TA - Archives of Surgery pages = {206}, VI - 144 IP - 3 AID - 10.1001/archsurg.144.3.206 [doi] 4100 - http://dx.doi.org/10.1001/archsurg.144.3.206 SO - Archives of Surgery March 16, 2009 144(3):206