1Department of Parasitology and Institute of Health Science, Gyeongsang National University College of Medicine, Jinju 660-751, Korea.
2Department of Parasitology, Hanyang University College of Medicine, Seoul 133-791, Korea.
3Korea Association of Health Promotion, Seoul 157-704, Korea.
4Department of Parasitology, Faculty of Medical Sciences, National University of Laos, Vientiane, Lao PDR. JFIF d d Ducky d qhttp://ns.adobe.com/xap/1.0/