H. Muhamad, S. . Sangkhathat, A. . Geater, W. . Chawchoowej, and S. . Patrapinyokul, “Preoperative Predictors of Peri-operative Red Blood Cell Transfusion in Major Pediatric Surgical Procedures”, Thai J Surg, vol. 25, no. 2, pp. 67–70, Jun. 2004.