ASSOMO NDEMBA, Peguy Brice, 2Faculty of Medicine and Biomedical Sciences, University of Yaounde I, BP 337, Yaounde, Republic of Cameroon 3Eugen Ionescu Postdoctoral scholarship recipient in Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Victor Babes str., no. 8, Cluj-Napoca, Romania, Cameroon