TI - REsearch letters PT - JOUR DP - 2010 TA - Archives of Internal Medicine pages = {1501-1510}, VI - 170 IP - 16 AID - 10.1001/archinternmed.2010.289 [doi] 4100 - http://dx.doi.org/10.1001/archinternmed.2010.289 SO - Archives of Internal Medicine September 13, 2010 170(16):1501