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[http://www.emedicine.com/EMERG/topic215.htm] Ratanapo S, Mungthin M, Soontrapa S, Faithed C, Siripattanapipong S, Rangsin R, Naaglor T, Piyaraj P, Taamasri P, Leelayoova S: Multiple modes of transmission of giardiasis in primary schoolchildren of a rural community, Thailand. Am...