by KITTIGUL, Leera, RAENGSAKULRACH, Boonyos, CHAICHANTANAKIT, Nattasai, VATHANOPHAS, Kanda, SIRITANTIKORN, Sontana, KANYOK, Raweewan, UTRARACHKIJ, Fuangfa, DIRAPHAT, Pornpan, THIRAWUTH, Vipa, SIRIPANICHGON, Kanokrat, PUNGCHITTON, Supornvit, CHITPIROM, Kitja
Published in Southeast Asian journal of tropical medicine and public health (01.03.2000)