1. Korea Hemophilia Foundation; Seoul Korea
2. Dept. of Pediatrics; College of Medicine; Inha University; Incheon Korea
3. Biomedical Institute; Seoul National Bundang Hospital; Gyeonggi
4. College of Medicine; Ulsan University; Ulsan
5. School of Medicine; Kyunghee University; Seoul Korea
6. Kyungpook National University Hospital; Daegu Korea
7. Chonnam National University Hwasun Hospital; Jeonnam Korea
8. Korea Hemophilia Foundation Pusan Clinic; Pusan Korea