1 Faculty of Medicine and Pharmacy, Mohamed Ist University, Oujda, Morocco. Electronic address: k.elbairi@ump.ac.ma.
2 ERVMOB Equipe de Recherche en Virologie et Onco-Biologie, Faculty of Medicine, Pathology Department, National Institute of Oncology, Université Mohamed V, Rabat, Morocco.
3 Department of Medical Oncology, Mohamed VI University Hospital, Oujda, Morocco.