Affiliation: | 1.Rheumatology Division, Department of Medicine, Unaizah Collage of Medicine and Medical Sciences, Qassim University, Qassim, Kingdom of Saudi Arabia ;2.Internal Medicine and Rheumatology, King Khalid Hospital, Hail, Kingdom of Saudi Arabia ;3.Rheumatology Department, King Khalid Hospital, Hail, Kingdom of Saudi Arabia ; |