Suraseranivongse, Suwannee, Songyos Valairucha, Mongkol Laohapensang, Ravit Ruangtrakul, Suntree Saleepanth, Ruedee Kaosaard, and Praneet Sirirutbunkajal. “Comparison of Morphine Given by An Intravenous Sliding Scale or by Intramuscular Route for Postoperative Pain Relief in Pediatric Patients : An Interim Analysis”. Siriraj Medical Journal 55, no. 8 (August 1, 2003): 465–472. Accessed January 29, 2023.