[1] Univ Antwerp, Dept Med Genet, B-2650 Edegem, Belgium
[2] Ankara Numune Training & Res Hosp, Dept Endocrinol & Metab, Ankara, Turkey
[3] Leiden Univ, Med Ctr, Dept Endocrinol & Metab Dis, Leiden, Netherlands
[4] Univ Antwerp, Lab Cell Biol & Histol, B-2650 Edegem, Belgium
[5] Univ Wurzburg, Dept Mol Plant Physiol & Biophys, D-97070 Wurzburg, Germany