title: Technical appendix
authors: School of Pharmacy and Institute for Health Policy Studies, University of California, San Francisco, 3333 California St, Room 420, Box 0613, San Francisco, CA 94143. kathryn@itsa.ucsf.edu.
authors: KA
authors: Phillips
authors: MG
authors: Shlipak
authors: P
authors: Coxson
authors: PA
authors: Heidenreich
authors: MG
authors: Hunink
authors: PA
authors: Goldman
authors: LW
authors: Williams
authors: MC
authors: Weinstein
authors: L
authors: Goldman