Abstract
1 First Department of Internal Medicine, Sapporo Medical University, South-1, West-16, Chuo-ku, Sapporo 060-8543, Japan
2 Department of Surgical Pathology, Sapporo Medical University, South-1, West-16, Chuo-ku, Sapporo 060-8543, Japan
3 Department of Pediatrics, Sapporo Medical University, South-1, West-16, Chuo-ku, Sapporo 060-8543, Japan
4 Sapporo Medical University, South-1, West-16; Chuo-Ko, Sapporo 060-8543, Japan