[1] Vrije Univ Amsterdam, Med Ctr, Dept Clin Genet & Human Genet, NL-1007 MB Amsterdam, Netherlands
[2] Vrije Univ Amsterdam, Med Ctr, Dept Pathol, NL-1007 MB Amsterdam, Netherlands
[3] Vrije Univ Amsterdam, Med Ctr, Dept Internal Med, NL-1007 MB Amsterdam, Netherlands
[4] Med Ctr Alkmaar, Dept Internal Med, Alkmaar, Netherlands
[5] Univ Utrecht, Ctr Med, Dept Internal Med, NL-3508 GA Utrecht, Netherlands
[6] Univ Utrecht, Ctr Med, Dept Med Genet, NL-3508 GA Utrecht, Netherlands