Affiliation: | (1) Department of Rheumatology, El Ayachi hospital, University Hospital of Rabat-Sale, Rabat, Morocco;(2) Laboratory of Information and Research on Bone Diseases (LIRPOS), Faculty of Medicine and Pharmacy, Rabat, Morocco;(3) Laboratory of Biostatistics, Clinical Research and Epidemiology (LBRCE), Faculty of Medicine and Pharmacy, Rabat, Morocco |