Dileep Kumar Khatri, Muhammad lqbal Rao, Noor Alam Ansari. 2015. “Demographic Correlates of Hoarseness of Voice & Their Etiological Factors”. Journal of Peoples University of Medical &Amp; Health Sciences Nawabshah. (JPUMHS) 5 (4):161-70. http://publication.pumhs.edu.pk/index.php/ojs/article/view/210.