[1]
Wongtiraporn, W., Sangkarat, S., Laiwejpithaya, S., Pongriyawattana, S. and Chaudakshetrin, P. 1999. A Comparison Study Between Oral Morphine Syrup and Morphine Intramuscular Injection in Premedication. Siriraj Medical Journal. 51, 2 (Feb. 1999), 86–91.