Simeon-Pierre Choukem1, Jean Claude Mbanya2. 1. Department of Internal medicine and Paediatrics, Faculty of Health Sciences, University of Buea, Buea, Cameroon; Health and Human Development (2HD) Research Network, Douala, Cameroon; Diabetes and Endocrine Unit, Department of Internal Medicine, Douala General Hospital, Douala, P.O. Box 4856, Cameroon. Electronic address: schoukem@gmail.com. 2. Department of Internal Medicine and Specialties, Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Yaoundé, Cameroon; Laboratory of Molecular Medicine and Metabolism, Biotechnology Centre of Nkolbisson, University of Yaoundé 1, Yaoundé, Cameroon; National Obesity Centre, Yaoundé Central Hospital, Yaoundé, Cameroon.