Shrestha, B. L., R. C. M. Amatya, S. KC, I. Shrestha, and M. Pokharel. “Aetiological Factors of Hoarseness in Patients Attending at Kathmandu University Hospital”. Bangladesh Journal of Otorhinolaryngology, vol. 19, no. 1, May 2013, pp. 14-17, doi:10.3329/bjo.v19i1.11877.