Journal of the Medical Association of Thailand Vol 84, No 4:APRIL 2001 0125-2208 84 4 2001 Apr Measles Antibody in the Children in Ubon Ratchathani Province 500 EN Penchan Saipan Teeranard Jiwapaisarnpong Sirima Pattanadilok Yupin Loyha Tassanee Janggajit Original Article