1. Division of Ecology and Environment, Chungnam Development Institute, Gongju 314-140, Korea.
2. Department of Parasitology, Biomedical Center for Brain Korea 21 an Institute of Health Science Gyeongsang National University School of Medicine, Jinju 660-751, Korea.
3. Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea.
4. Department of Parasitology and Research Center for Mummy, College of Medicine, Dankook University, Cheonan 330-714, Korea.