Fukuma, Shingo
Fukuhara, Shunichi
Shimizu, Sayaka
Akizawa, Tadao
Fukagawa, Masafumi
Funding for this research was provided by:
Kyowa Hakko Kirin
Article History
Received: 30 January 2019
Accepted: 25 July 2019
First Online: 5 August 2019
Competing Interests
: The authors declare no competing interests.