TI - REsearch letters PT - JOUR DP - 2010 TA - Archives of Internal Medicine pages = {1604-1609}, VI - 170 IP - 17 AID - 10.1001/archinternmed.2010.303 [doi] 4100 - http://dx.doi.org/10.1001/archinternmed.2010.303 SO - Archives of Internal Medicine September 27, 2010 170(17):1604