Affiliation: | (1) Department of community medicine, Geneva University Hospitals, 24 Micheli-du-Crest, CH-1211 Geneva 14, Switzerland;(2) Quality of Care Unit, Geneva University Hospitals, 24 Micheli-du-Crest, CH-1211 Geneva 14, Switzerland;(3) Department of Health Services, University of Washington, Box 357660, 98195 Seattle, WA, USA |