Study of epidemiological, clinical and evolutionary characteristics of a population of patients hospitalized for COVID-19 in Morocco oleh Heikel Jaafar, Benkirane Hasnae, Ballouk Fadoua, Bouziani Amina, Laamiri Fatima Zahra, Lahmam Houria, Obtel Majdouline, El Haloui Noureddine, Ennibi Khalid, Khan Naim Akhtar, El Fahime El Mostafa, Zahraoui Majida, Aguenaou Hassan, Barkat Amina