1. Laboratory for Molecular Medicine and Metabolism; Biotechnology Center; University of Yaoundé I; Yaoundé Cameroon
2. INSERM; UMRS 1138; Centre de Recherche des Cordeliers; Paris France
3. National Obesity Centre; Yaoundé Central Hospital; Yaoundé Cameroon
4. Department of Medicine; Groote Schuur Hospital and University of Cape Town; Cape Town South Africa
5. Saint-Louis University Hospital; Assistance Publique - Hôpitaux de Paris; Paris France
6. Diabetes Research Center; Brussels Free University-VUB; Brussels Belgium
7. Department of Internal Medicine; University of Yaoundé I; Yaoundé Cameroon