Affiliation: | a Division of General Internal Medicine, Department of Medicine and Division of Substance Dependence, Department of Psychiatry, Mail Stop B180, Aurora, CO 80045, University of Colorado School of Medicine and Denver Health Medical Center, USAb Division of General Internal Medicine, Department of Medicine, University of Colorado School of Medicine, Mail Stop B180, Aurora, CO 80045, USAc Division of Substance Dependence, Department of Psychiatry, University of Colorado School of Medicine, 1741 Vine St., Denver, CO 80206, USAd Denver Health Medical Center, 777 Bannock St, Denver, CO 80204, USAe Institute for Health Research, Kaiser Permanente, Colorado, PO Box 378066, Denver CO 80237-806, USA |