AU - Moore JC, Ballas ZK TI - REsearch letters PT - JOUR DP - 2009 TA - Archives of Internal Medicine pages = {199-205}, VI - 169 IP - 2 AID - 10.1001/archinternmed.2008.580 [doi] 4100 - http://dx.doi.org/10.1001/archinternmed.2008.580 SO - Archives of Internal Medicine January 26, 2009 169(2):199