Chaudhary, SK, and B Mishra. “Comparison of Hypertonic Saline-Sodium Hydroxide Method With Modified Petroff’s Method for the Decontamination and Concentration of Sputum Samples”. International Journal of Infection and Microbiology 2, no. 3 (September 17, 2013): 78–81. Accessed April 19, 2024. https://www.nepjol.info/index.php/IJIM/article/view/8664.