M., Saravanan, P. M. Ramesh, and K. Rajarajeswari. 2018. “Which Is Better Among FEV1/FVC and FEV1/SVC in Obstructive Airway Disease?”. International Journal of Advances in Medicine 5 (6):1328-30. https://doi.org/10.18203/2349-3933.ijam20184195.