[1] Vrije Univ Amsterdam, Inst Hlth Sci, Dept Hlth Econ & Hlth Technol Assessment, Amsterdam, Netherlands
[2] TNO Qual Life, Leiden, Netherlands
[3] Agis Hlth Insurance, Amersfoort, Netherlands
[4] Erasmus Univ, Dept Hlth Policy & Management, Rotterdam, Netherlands
[5] Erasmus Univ, Med Ctr, Dept Hlth Policy & Management, Rotterdam, Netherlands
[6] Univ Michigan, Ross Sch Business, Ann Arbor, MI 48109 USA