JitraWaikagul has been a specialist in helminthology of the Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Thailand, since 1971. She holds a B.Sc. (Zoology) from Chulalongkorn University, an M.Sc. (Tropical Medicine) from Mahidol University, an M.Sc. (Parasitology) from Queensland University, Australia, and a Ph.D. (Medical Science) from Hiroshima University, Japan. Her research contributes to expanding knowledge of the biology and taxonomy of zoonotic helminthes, in particulars fish- and crustacean-borne tremotodes. Urusa Thaenkham has been worked as a specialist in molecular systematics of helminths in the Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Thailand. She finished her Ph.D. (Tropical Medicine) from Mahidol University. Her research interested is focused on molecular systematics of helminths, in particularly fish- and crustacean-borne trematodes.