Box-Whisker plot (median, interquartile range, whisker lines, and outlying points) of proportional changes by treatment arms of cyclophosphamide (CYC) and mycophenolate mofetil (MMF), and the combined group: three changes in the net improvements are expressed in the difference between two proportions, “from lung fibrosis (LF) to ground glass (GG) - GG to LF”, “from lung fibrosis (LF) to normal lung (NL) - NL to LF”, and “from GG to NL – NL to GG”.