TI - REsearch letters PT - JOUR DP - 2010 TA - Archives of Internal Medicine pages = {1169-1177}, VI - 170 IP - 13 AID - 10.1001/archinternmed.2010.187 [doi] 4100 - http://dx.doi.org/10.1001/archinternmed.2010.187 SO - Archives of Internal Medicine July 12, 2010 170(13):1169