Centre for Heart Rhythm Disorders, University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia. Department of Public Health, Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Yaoundé, Cameroon; Health Information Management and Risk Assessment Unit, World Health Emergencies Programme, Democratic Republic of the Congo World Health Organization Country Office, WHO Region for Africa, Kinshasa, Democratic Republic of the Congo. Diabetes Research Center, Albert Einstein College of Medicine, Bronx, New York, NY, USA. Department of Internal Medicine, Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Yaoundé, Cameroon. Department of Internal Medicine, Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Yaoundé, Cameroon; Department of General Medicine, Lafe-Baleng Divisional Hospital, Western Regional Delegation, Ministry of Public Health, Bafoussam, Cameroon. Department of General Medicine, Mayo Darle Sub-Divisional Hospital, Adamawa Regional Delegation, Ministry of Public Health, Banyo, Cameroon. Department of Internal Medicine, Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Yaoundé, Cameroon; School of Public Health, Faculty of Medicine, University of Paris-Sud, Le Kremlin-Bicêtre, France. School of Health and Related Research, The University of Sheffield, Sheffield, UK. School of Public Health, Faculty of Medicine, University of Paris-Sud, Le Kremlin-Bicêtre, France; Department of Epidemiology and Public Health, Centre Pasteur of Cameroon, Yaoundé, Cameroon. Electronic address: bignarimjj@yahoo.fr.