Hameed, M. .; Hameed, H. .; Khursheed, R. .; Farooq, M. S. .; Ashraf, H. .; Shaheen, B. . Association of Vitamin D With Severity of Rheumatoid Arthritis: Association of Vitamin D With Severity of Rheumatoid Arthritis. apmc 2024, 18, 310-313.