AU - An PG, Rabatin JS, Manwell LB, et al TI - Burden of difficult encounters in primary care: Data from the minimizing error, maximizing outcomes study PT - JOUR DP - 2009 TA - Archives of Internal Medicine pages = {410-414}, VI - 169 IP - 4 AID - 10.1001/archinternmed.2008.549 [doi] 4100 - http://dx.doi.org/10.1001/archinternmed.2008.549 SO - Archives of Internal Medicine February 23, 2009 169(4):410