Vaidya, B.; Nakarmi, S.; Chaudhary, A.; Batajoo, P.; Rajbhandari, N. Study of Hypovitaminosis D As a Cause of Chronic Widespread Pain in Patients Presenting to Rheumatology Clinic. J Adv Intern Med 2014, 3 (1), 1-4. https://doi.org/10.3126/jaim.v3i1.10694.