M. R. Grigsby,T. Siddharthan,S. L. Pollard,M. Chowdhury,A. Rubinstein,J. J. Miranda,A. Bernabe-Ortiz,D. Alam,B. Kirenga,R. Jones,F. van Gemert and W. Checkley. Low Body Mass Index Is Associated with Higher Odds of COPD and Lower Lung Function in Low- and Middle-Income Countries. Copd. 2019;16(1):10.1080/15412555.2019.1589443.