Hidayat, R., R. Adriansyah, A. Y. Safri, and S. Koesnoe. “Serum Nerve Growth Factor in the Occurrence of Peripheral Neuropathy in Rheumatoid Arthritis Patients”. Indonesian Journal of Rheumatology, Vol. 12, no. 1, June 2020, doi:10.37275/ijr.v12i1.149.