1 Internal Medicine Department, University of Algiers 1, Faculty of Medical Sciences, Benyoucef Benkhedda, Bab El Oued University Hospital Center, Bab El Oued City, 16 000, Algiers, North Africa, Algeria. abbacidaghor@gmail.com.
2 Department of Epidemiology, Bab El Oued University Hospital Center, Bab El Oued City, Algiers, Algeria.