Masaaki Nakamura1, Shuji Mita1, Tatsufumi Murakami1, Makoto Uchino1, Susumu Watanabe1, Makoto Tokunaga1, Toshihide Kumamoto1, Masayuki Ando1
1First Department of Internal Medicine, Kumamoto University School of Medicine, 1-1-1 Honjo, Kumamoto 860, Japan