1. Laboratory of Epidemiology and Research in Health Sciences, Faculty of Medicine and Pharmacy, Sidi Mohamed Ben Abdellah University, Fez 30070, Morocco
2. Faculty of Sciences and Techniques, Errachidia, Moulay Ismail University of Meknes, Errachidia 52000, Morocco
3. Department of Biology and Geology, Teachers Training College (Ecole Normale Superieure), Sidi Mohamed Ben Abdellah University, Fez 30030, Morocco