The efficacy, safety and cost-effectiveness of hydroxychloroquine, sulfasalazine, methotrexate triple therapy in preventing relapse among patients with rheumatoid arthritis achieving clinical remission or low disease activity: the study protocol of a randomized controlled clinical Trial (ESCoRT study)Juan Zhao, Zhuoli Zhang, Yangfeng Wu et al.|BMC Medical Informatics and Decision Making|2021Cited by 5