Syed Hamid Ali Shah, Syed Hamid Ali Shah, Muhammad Mubeen Muhammad Mubeen, Mushtaq Hussain Raja Mushtaq Hussain Raja, Syed Zulfiqar Haider Syed Zulfiqar Haider, Shadab Ahmed Butt Shadab Ahmed Butt, and Muhammad Manzoor Muhammad Manzoor. 2007. “Effect of Accumulated Stomach Gas Due to Positive Pressure Ventilation in Children on Oximetery Values”. Journal of Rawalpindi Medical College 11 (1). http://journalrmc.com/index.php/JRMC/article/view/774.