1. National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba Japan
2. Department of Cardiovascular Surgery; Tokyo Medical and Dental University; Tokyo Japan
3. Department of Advanced Surgical Technology Research and Development, Graduate School of Medical and Dental Science; Tokyo Medical and Dental University; Tokyo Japan
4. Senko Medical Instrument Mfg. Co., Ltd.; Saitama Japan
5. Optoquest Co., Ltd.; Saitama Japan