Ali Raza Brohi, Naseem Mengal, Noor Adam Ansari. “Foreign Body Aspiration in Children”. Journal of Peoples University of Medical &Amp; Health Sciences Nawabshah. (JPUMHS), vol. 3, no. 1, June 2013, pp. 10-14, http://121.52.155.46/index.php/ojs/article/view/112.