AU - Freed GL, Dunham KM, Singer D TI - HEalth plan use of board certification and recertification of surgeons and nonsurgical subspecialists in contracting policies PT - JOUR DP - 2009 TA - Archives of Surgery pages = {753-758}, VI - 144 IP - 8 AID - 10.1001/archsurg.2009.128 [doi] 4100 - http://dx.doi.org/10.1001/archsurg.2009.128 SO - Archives of Surgery August 14, 2009 144(8):753