Caroline Johansyah; I Putu Oka Yudaswara Pande; Maria Johansyah. The Association of Vitamin D Deficiency With Disease Activity in Rheumatoid Arthritis: A Systematic Review. the int. j. of med. science and health 2025, 18 (6), 1-41. https://doi.org/10.70070/01pf3g54.