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Takeyoshi Uchida
Acoustics and Ultrasonics Section, National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST)
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Hidenobu Sato
Clinical Engineering Department, Faculty of Biomedical Engineering, Toin University of Yokohama
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Shinichi Takeuchi
Clinical Engineering Department, Faculty of Biomedical Engineering, Toin University of Yokohama
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Tsuneo Kikuchi
Acoustics and Ultrasonics Section, National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST)