Watanabe, Sayumi
Konta, Tsuneo http://orcid.org/0000-0001-7681-6469
Ichikawa, Kazunobu
Watanabe, Masafumi
Ishizawa, Kenichi
Ueno, Yoshiyuki
Yamashita, Hidetoshi
Kayama, Takamasa
Kubota, Isao
Funding for this research was provided by:
a Grant-in-Aid for Scientific Research (18K08229, 15K09240)
a Grant in-Aid from the twenty-first Century Center of Excellence
Global COE program of the Japan Society for the Promotion of Science
Article History
Received: 2 April 2018
Accepted: 30 September 2018
First Online: 6 October 2018
Compliance with ethical standards
:
: The institutional ethics committees of Yamagata University School of Medicine and the town of Takahata approved this study (Yamagata University, April, 2006, no. 1), and all subjects provided written informed consent. The procedures were performed in accordance with the Helsinki Declaration.
: All authors declare no competing financial interests.