Kampol Laohapensang. 1989. Negative laparotomy for abdominal injury. Chiang Mai:Chiang Mai Hospital;
Kampol Laohapensang. (1989) Negative laparotomy for abdominal injury (รายงานผลงานวิจัย). Chiang Mai Hospital:Chiang Mai.
Kampol Laohapensang. Negative laparotomy for abdominal injury. Chiang Mai:Chiang Mai Hospital, 1989.
Kampol Laohapensang. (1989) Negative laparotomy for abdominal injury (รายงานผลงานวิจัย). Chiang Mai Hospital:Chiang Mai.