Ahmad, N., M. Ashfaq, M. Javed, and Q. Khan. “NON OPAQUE FOREIGN BODY ASPIRATION IN CHILDREN: SHOULD WE BE MORE VIGILANT AND PROACTIVE?”. Journal of Postgraduate Medical Institute, vol. 26, no. 1, Dec. 2011, https://www.jpmi.org.pk/index.php/jpmi/article/view/1205.