Clonorchis sinensisClonorchiasisTrematode InfectionsTrematodaOpisthorchisMetacercariaeFishesHeterophyidaeOpisthorchiasisKoreaPraziquantelParasite Egg CountDNA, HelminthFood ParasitologyAnthelminticsCholecystolithiasisFish DiseasesAntiplatyhelmintic AgentsAngelica sinensisCitrus sinensisAntigens, HelminthCamellia sinensisAntibodies, HelminthOsmeriformesHelminth ProteinsIntestinal Diseases, ParasiticCellophanePhenylenediaminesParasitologyHost-Parasite InteractionsFecesBile Ducts, IntrahepaticFresh WaterSnailsParamphistomatidaeEchinostomaCordyceps