Polly, Zinat Ara, et al. “FVC, FEV<sub>1< sub> and FEV<sub>1< Sub> FVC%, In Postmenopausal Women and Their Relationship With Serum Progesterone and Estrogen Level”. Journal of Bangladesh Society of Physiologist, vol. 4, no. 1, Dec. 2009, pp. 7-13, doi:10.3329/jbsp.v4i1.4063.