Faiz, Shahid Bin, Asad Qayyum, and Atif Najam. 2011. “COMPARISON OF SERUM IMMUNOGLOBULIN LEVELS BEFORE AND AFTER ADENOTONSILLECTOMY AND TONSILLECTOMY”. Pakistan Armed Forces Medical Journal 61 (4): 594-7. https://www.pafmj.org/PAFMJ/article/view/1151.