1. Clinical Research Center, National Hospital Organization Kinki-chuo Chest Medical Center, 1180 Nagasone-cho, Kita-ku Sakai, Osaka 591-8555, Japan
2. Department of Microbiology, Kobe Institute of Health, 4-6 Minatojima-nakamachi, Chuo-ku Kobe, Hyogo 650-0046, Japan
3. Clinical Research Advisor, Japan Anti-Tuberculosis Association, Fukujuji Hospital, 3-1-24 Matsuyama, Kiyose, Tokyo 204-0022, Japan
4. Center for Respiratory Diseases, Japan Community Health Care Organization Hokkaido Hospital, 8-3-18 Ichijyo, Nakanoshima, Toyohira-ku Sapporo, Hokkaido 062-8618, Japan
5. Center for Respiratory Diseases, National Hospital Organization Tokyo National Hospital, 3-1-2 Takeoka, Kiyose, Tokyo 204-8585, Japan
6. Internal Medicine, National Hospital Organization Kinki-chuo Chest Medical Center, 1180 Nagasone-cho, Kita-ku Sakai, Osaka 591-8555, Japan