[1] Inst Human Genet, Lubeck, Germany
[2] Inst Human Genet, Kiel, Germany
[3] Inst Neurogenet, Lubeck, Germany
[4] Inst Cardiogenet, Lubeck, Germany
[5] Dept Pediat Endocrinol, Utrecht, Netherlands
[6] Div Labs, Pharm & Biomed Genet, Utrecht, Netherlands
[7] Dept Genet, Utrecht, Netherlands
[8] Dept Paediat, Div Paediat Endocrinol & Diabet, Kiel, Germany