TY - JOUR T1 - REsearch letters Y1 - 2010/10/11 N1 - 10.1001/archinternmed.2010.314 JO - Archives of Internal Medicine SP - 1695 EP - 1700 VL - 170 IS - 18 N2 - SN - 0003-9926 M3 - doi: 10.1001/archinternmed.2010.314 UR - http://dx.doi.org/10.1001/archinternmed.2010.314 ER -