The authors would like to thank Assoc. Prof. Kajornsak
Kantapanit, Assoc. Prof. Chupensri Wongbuddha,
Prof. Pasuk Mahakkanukrauh MD., Assoc.Prof.
Putipong Pukkaman, Asst. Prof. Pawin
Puapornpong MD., Assoc. Prof. Sanguansak Rerksuppaphol
MD. and Preecha Singhadej MD for recommending
and providing the knowledge.