AU - Andersson R TI - Proportion of cases of perforated appendicitis: A bad measure of quality of care PT - JOUR DP - 2011 TA - Archives of Surgery pages = {885-886}, VI - 146 IP - 7 AID - 10.1001/archsurg.2011.168 [doi] 4100 - http://dx.doi.org/10.1001/archsurg.2011.168 SO - Archives of Surgery July 1, 2011 146(7):885