I would like to express my sincere gratitude and deep appreciation to
Assoc. Prof. Pornpimol Kongtip, my major advisor, for her constant support and encouragement, guidance and advice. His insistence for perfection has instilled in me to always strive for the better. Without him, this work could never been accomplished.
My appreciation also extends to the co-advisors, Assoc. Prof. Witaya Yoosook, Lect. Suttinun Chantanakul and Lect. Mathuros Tipayamongkholgul. They have also contributed by providing constructive comments and criticism with respect to experiments.
I am also grateful to thank all of pediatricians, ANC nurse, delivery room nerses, well baby clinic nurses and laboratory staffs at Sawanprachaluk hospital, Amnatcharean hospital and Paholpolpayuhasena hospital. They were always nice and friendly also helped me.
Special thanks go to Ms. Luksamee Dechnuraknukul and Ms. Sasima Mingnimite from Pesticide research center for kindly help and advice me during the analytical laboratory.
I would like to sincerely thank Faculty of Public Health, Instrument Central Laboratory Management. They were always nice and friendly also helped me.
I am also grateful to all of officer of department of Occupational Health and Safety.
This research work is supported by the grant from the Centre for Environmental Health and Toxicology (EHT) under Science & Technology Postgraduate Education and Research Development Office (PERDO) of the Ministry of Education.
Finally, I would also like to take this opportunity to express my gratitude to my precious family, my parents and sister for giving me so much support, entirely care, life, and enless love to me during the M.Sc.period of this study.