AU - Livingston EH TI - BAriatric surgery outcomes at designated centers of excellence vs nondesignated programs PT - JOUR DP - 2009 TA - Archives of Surgery pages = {319-325}, VI - 144 IP - 4 AID - 10.1001/archsurg.2009.23 [doi] 4100 - http://dx.doi.org/10.1001/archsurg.2009.23 SO - Archives of Surgery April 1, 2009 144(4):319