1Department of Parasitology, Seoul National University College of Medicine, Seoul 110-799, Korea.
2Department of Parasitology, Inha University College of Medicine, Inchon, Korea.
3Department of Parasitology, College of Medicine Hallym University, Chunchon 200-701, Korea. JFIF d d Ducky d qhttp://ns.adobe.com/xap/1.0/