Presialia, Athira, and Bambang Setyohadi. 2021. “Effect of Folic Acid Supplementation for Reducing Methotrexate Side Effects in Patients With Rheumatoid Arthritis: An Evidence-Based Case Report”. Indonesian Journal of Rheumatology 12 (2), 274-78. https://doi.org/10.37275/ijr.v12i2.113.