[1] Radboud Univ Nijmegen, Med Ctr, Dept Human Genet, NL-6525 ED Nijmegen, Netherlands
[2] Univ Pompeu Fabra, Dept Ciencies Expt & Salut, Barcelona, Spain
[3] CIBERER, Barcelona, Spain
[4] St Michaels Hosp, Dept Clin Genet, Bristol, Avon, England
[5] Rigshosp, Univ Copenhagen Hosp, Dept Clin Genet, Copenhagen, Denmark
[6] Newcastle Univ, Inst Human Genet, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[7] Yorkhill Hosp, Dept Med Genet, Glasgow, Lanark, Scotland
[8] Univ Zurich, Inst Med Genet, CH-8603 Schwerzenbach, Switzerland
[9] Family Federat Finland, Dept Med Genet, Helsinki, Finland
[10] Emma Kinderziekenhuis Acad Med Ctr AMC, Dept Pediat Genet, Amsterdam, Netherlands
[11] Univ Klinikum Essen, Inst Humangenet, Essen, Germany
[12] Univ Lubeck, Inst Humangenet Lubeck, Lubeck, Germany