Shrestha, Susmita, and Anil Kumar Adhikari. 2019. “Comparison of Maximum Phonation Duration and S/Z Ratio in Individuals With Asthma, Tuberculosis and Clinically Normal Voice”. Medical Journal of Shree Birendra Hospital 18 (2):16-21. https://doi.org/10.3126/mjsbh.v18i2.24089.