Gagiya, A. K. ., A. S. . Patel, G. R. . Bhagat, V. R. . Bhadiyadra, K. S. . Patel, and P. . Patel. “Spirometry And X-Ray Findings in Cases of Interstitial Lung Diseases”. National Journal of Community Medicine, vol. 3, no. 04, Dec. 2012, pp. 700-2, https://njcmindia.com/index.php/file/article/view/1798.