Rittidet, C., N. Chaiear, P. Tumsatan, P. Domthong, W. Sukkasem, and P. S. Burge. “Proportion of occupational progressive fibrosing interstitial lung disease in the tertiary hospitals of Thailand”. Asia-Pacific Journal of Science and Technology, vol. 26, no. 04, Aug. 2021, pp. APST-26, doi:10.14456/apst.2021.37.