[1] Univ Washington, CHOICE Inst, Sch Pharm, Seattle, WA USA
[2] London Sch Econ & Polit Sci, Dept Hlth Policy, London, England
[3] Fred Hutchinson Canc Res Ctr, Hutchinson Inst Canc Outcomes Res, Seattle, WA USA
[4] Univ Calif San Diego, Sch Pharm, Div Clin Pharm, San Diego, CA USA
[5] Tufts Univ, Ctr Evaluat Value & Risk Hlth, Boston, MA USA
[6] Univ Washington, CHOICE Inst, Sch Pharm, 1959 NE Pacific Ave,Box 357630, Seattle, WA 98195 USA