Kalaisezhian, N., S. Irsath, and R. Shankar. “Validity of Leukocyte Esterase Reagent (LER) Strip in Diagnosing Infectious Pleural Effusion”. International Journal of Advances in Medicine, vol. 5, no. 4, July 2018, pp. 1041-6, doi:10.18203/2349-3933.ijam20183144.