Song, P.- ze, N. Wu, C. Huo, and X.- ming Wang. “Correlation Analysis and Clinical Significance of Musculoskeletal Ultrasound Semi-Quantitative Grading With Bone Salt Metabolism, Rheumatoid Factor and Erythrocyte Sedimentation Rate in Patients With Rheumatoid Arthritis”. Pakistan Journal of Medical Sciences, Vol. 39, no. 6, Sept. 2023, doi:10.12669/pjms.39.6.7144.