Soh, Zu https://orcid.org/0000-0001-7182-9383
Sakamoto, Kazuma
Suzuki, Michiyo
Iino, Yuichi
Tsuji, Toshio
Article History
Received: 15 November 2017
Accepted: 29 October 2018
First Online: 21 November 2018
Competing Interests
: Kazuma Sakamoto is employee of Sony Corporation. Zu Soh, Michiyo Suzuki, Yuichi Iino, and Toshio Tsuji declare no potential conflict of interest.