Abdallah Roukain1, Gerasimos P Sykiotis2. 1. Service of Endocrinology, Diabetology and Metabolism, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland. abdallah.roukain@chuv.ch. 2. Service of Endocrinology, Diabetology and Metabolism, Lausanne University Hospital, University of Lausanne, Lausanne, Switzerland. gerasimos.sykiotis@chuv.ch.