Phung, Luc Duc
Pham, Dung Viet
Sasaki, Yuka
Masuda, Shuhei
Takakai, Fumiaki
Kaku, Nobuo
Watanabe, Toru
Article History
Received: 12 December 2019
Accepted: 3 February 2020
First Online: 26 March 2020
Competing interests
: The authors declare no competing interests.