Poonam Sinha; Rekha Kumari; Ritesh Runu; Sudhir Kumar; Ranjay Kumar Ranjan; Ravi Shekhar; Jiut Ram Keshari; Sweta Kumari. Assessment of Vitamin D3 Level in Patients of Rheumatoid Arthritis and Its Relationship With Disease Activity Using DAS 28-CRP in Tertiary Care Center of Bihar, India. Asian J Med Sci 2022, 13, 85-91.