Sangpairoj, Kant
Vivithanaporn, Pornpun
Apisawetakan, Somjai
Chongthammakun, Sukumal
Sobhon, Prasert
Chaithirayanon, Kulathida
Funding for this research was provided by:
Faculty of Science, Mahidol University
Department of Medical Services, Ministry of Public Health, Thailand
National Research Council of Thailand