[1] Vrije Univ Amsterdam Med Ctr, EMGO Inst Hlth & Care Res, Sect Community Genet, Dept Clin Genet, Amsterdam, Netherlands
[2] Maastricht Univ, Dept Gen Practice, Sch Publ Hlth & Primary Care, Maastricht, Netherlands
[3] Vrije Univ Amsterdam Med Ctr, EMGO Inst Hlth & Care Res, Dept Publ & Occupat Hlth, Amsterdam, Netherlands
[4] Vrije Univ Amsterdam Med Ctr, Inst Med Educ, Amsterdam, Netherlands
[5] Maastricht Univ, Dept Educ Dev & Res, Maastricht, Netherlands