[1] Radboud Univ Nijmegen, Radboud Inst Hlth Sci, Sci Ctr Qual Healthcare IQ healthcare, Med Ctr, POB 9101, NL-6500 HB Nijmegen, Netherlands
[2] Univ Utrecht, Univ Med Ctr Utrecht, Julius Ctr Hlth Sci & Primary Care, P Box 85500, Utrecht, Netherlands
[3] Spaarne Gasthuis Acad, Spaarne Gasthuis Hosp, POB 417, NL-2000 AK Haarlem, Netherlands
[4] Erasmus Univ, Erasmus Sch Hlth Policy Management, POB 1738,Campus Woudestein, NL-3000 DR Rotterdam, Netherlands