Xu, D., Hou, Y., Zheng, Y., Zheng, Y., Li, M., & Zeng, X. (2016). The 2013 American College of Rheumatology/European League Against Rheumatism Classification Criteria for Systemic Sclerosis Could Classify Systemic Sclerosis Patients at Earlier Stage: Data from a Chinese EUSTAR Center. Public Library of Science.

Xu, Dong, Yong Hou, Yuanfang Zheng, Yue Zheng, Mengtao Li, and Xiaofeng Zeng. The 2013 American College of Rheumatology/European League Against Rheumatism Classification Criteria for Systemic Sclerosis Could Classify Systemic Sclerosis Patients At Earlier Stage: Data From a Chinese EUSTAR Center. Public Library of Science, 2016.

Xu, Dong, et al. The 2013 American College of Rheumatology/European League Against Rheumatism Classification Criteria for Systemic Sclerosis Could Classify Systemic Sclerosis Patients At Earlier Stage: Data From a Chinese EUSTAR Center. Public Library of Science, 2016.