Harpreet SINGH et al. 2020. The Validity and Sensitivity of Rheumatoid Arthritis Pain Scale on a Different Ethnic Group From Indian Rheumatoid Arthritis Patients. Archives of Rheumatology. 35, 1 (Mar. 2020), 090–096. DOI:https://doi.org/10.5606/ArchRheumatol.2020.7348.