Institution: | (1) Services Effectiveness Research Program, Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Box 3454, Durham, NC 27710, USA;(2) Sociology Department, Purdue University, 700 W. State St., West Lafayette, IN 47907, USA;(3) Department of Health Policy and Administration, The Pennsylvania State University, 601E Ford Building, University Park, PA 16802, USA;(4) RTI International, Cornwallis Road, 3040, USA |