Inoue, T.
Okada, S.
Hamamoto, S.
Miura, H.
Matsuzaki, J.
Tambo, M.
Fukuhara, H.
Fujisawa, M.
Matsuda, T.
Nutahara, K.
Funding for this research was provided by:
Olympus funded, and lent the equipment
Article History
Received: 4 December 2019
Accepted: 26 February 2020
First Online: 14 March 2020
Compliance with ethical standards
:
: Olympus funded, and lent the equipment for this study.