Islam, Shausheen, Nasim Jahan, Nayma Sultana, and Rezina Akter. 2011. “FVC, FEV₁ and FEV<sub>1</Sub>/FVC% in Patients With Depressive Illness and Their Relationships With the Level of Depression”. Journal of Bangladesh Society of Physiologist 5 (2):94-100. https://doi.org/10.3329/jbsp.v5i2.6784.