1. Department of Endoscopic Diagnostics and Therapeutics, Kyushu University Hospital, Fukuoka, Japan.
2. Telemedicine Development Center of Asia, Kyushu University Hospital, Fukuoka, Japan.
3. Medical Information Center, Kyushu University Hospital, Fukuoka, Japan.
4. Research Institute for Information Technology, Kyushu University, Fukuoka, Japan.