1. Department of Laboratory Medicine, Dankook University Hospital, Cheonan 330-714, Korea.
2. Department of Cardiothoracic Surgery, College of Medicine, Dankook University, Cheonan 330-714, Korea.
3. Department of Laboratory Medicine, College of Medicine, Dankook University, Cheonan 330-714, Korea.
4. Department of Pathology, College of Medicine, Dankook University, Cheonan 330-714, Korea.
5. Department of Pathology, Dankook University Hospital, Cheonan 330-714, Korea.
6. Department of Parasitology, College of Medicine, Dankook University, Cheonan 330-714, Korea.