Yani, H., Dewi, S. and Rahmadi, A.R. 2019. Correlation between Serum Krebs von den Lungen-6 Levels with Forced Vital Capacity and Modified Rodnan Skin Score of Patients with Restrictive Lung Disease in Diffuse-Type Systemic Sclerosis. Indonesian Journal of Rheumatology. 11, 2 (Dec. 2019). DOI:https://doi.org/10.37275/ijr.v11i2.133.