[1] Univ Groningen, Univ Med Ctr Groningen, Dept Gen Practice & Elderly Care Med, Groningen, Netherlands
[2] Univ Groningen, Univ Med Ctr Groningen, Ctr Res & Innovat Med Educ, Groningen, Netherlands
[3] Univ Amsterdam, Acad Med Ctr, Ctr Evidence Based Educ, Amsterdam, Netherlands
[4] Univ Amsterdam, Acad Med Ctr, Dept Gen Practice, Amsterdam, Netherlands
[5] Univ Twente, Fac Behav Management & Social Sci, Dept Educ Sci, Enschede, Netherlands