[1] Univ Lausanne, Inst Univ Format & Rech Soins, CH-1011 Lausanne, Switzerland
[2] CHU Vaudois, Endocrinol Diabet & Metab Serv, CH-1011 Lausanne, Switzerland
[3] Newcastle Univ, Inst Med Genet, Newcastle Upon Tyne, Tyne & Wear, England
[4] Royal Victoria Infirm, Newcastle Upon Tyne NE1 4LP, Tyne & Wear, England
[5] Univ Lausanne, CH-1011 Lausanne, Switzerland