Author contributions
B.S., R.G.M., A.N. and A.F. designed the study. B.S. as national coordinator; R.G.M., A.N. and A.F. as PI for each center; R.G.M., J.A.T. and A.F. performed statistical analyses and drafted the manuscript. B.S. and A.N. team in Solo site are Pur., A.A., B.R.A.S., and W.S.; R.G.M. team in Yogyakarta site are Sum., Sud., J.A.T., E.H.H., I.T. and N.R.A.; A.F team in Bandung site are R.W., A.Y.S., T.W.M. and R.W.S. All sites team at least consist of internist, pulmonologist, anesthesiologist, radiologist and clinical pathologist. All sites maintained the study database and contributed to the data analysis. B.S., R.G.M. and A.F. made critical revisions to the manuscript. All sites obtained their own funding of the study. All authors read and approved the final manuscript. All authors are a Member of Indonesian Medical Doctor Association for Tissue Engineering and Cell Therapy (REJASELINDO).