Dechkum, Naowarut, Choomanee Larnom, Mayuratana Tepmongkol, Duangdao Waywa, and Yaninee Jaratwisarutporn. 2001. “Survey of Cryptosporidium oocysts in early primary schoolchildren in Samutsakhon and Nakhonpathom”. Archives of Allied Health Sciences 13 (2). Khon Kaen, Thailand:104-13. https://he01.tci-thaijo.org/index.php/ams/article/view/65958.