Masami Yoneyama1, Masanobu Nakamura1, Tomoyuki Okuaki1, Takashi Tabuchi1, Atsushi Takemura2, Makoto Obara2, Thomas Kwee3, Taro Takahara4
1Yaesu Clinic, Tokyo, Japan; 2Philips Electronics Japan, Tokyo, Japan; 3University Medical Center Utrecht, Utrecht, Netherlands; 4Tokai University School of Engineering, Kanagawa, Japan