Clonorchis sinensisClonorchiasisOpisthorchisTrematode InfectionsMetacercariaeOpisthorchiasisHeterophyidaeKoreaTrematodaPraziquantelParasite Egg CountDNA, HelminthCholecystolithiasisAnthelminticsAngelica sinensisCitrus sinensisCamellia sinensisAntibodies, HelminthAntigens, HelminthAntiplatyhelmintic AgentsOsmeriformesCellophaneFood ParasitologyPhenylenediaminesParasitologyHelminth ProteinsIntestinal Diseases, ParasiticFishesBile Ducts, IntrahepaticFecesCordycepsFish Diseases