Funding for this research was provided by:
Ministry of Education, Culture, Sports, Science and Technology (15K08220, 15K11916, 15H05935, 16K08534, 15YPTK-002009)
Text and Data Mining valid from 2017-09-07
Received: 22 July 2017
Accepted: 24 August 2017
First Online: 7 September 2017
Compliance with ethical standards
: This study was partly supported by a Grant from Takeda Science Foundation to NK, a Grant-in-Aid for Scientific Research (C:15K08220) to HK, (C:16K08534) to NK and (C:15K11916) to HM, and a Grant-in-Aid for Scientific Research on Innovative Areas (Grant number 15H05935, “Living in Space”) to HM and HK from the Ministry of Education, Culture, Sports, Science, and Technology of Japan, and a Grant (15YPTK-002009) to HM from the Japan Aerospace Exploration Agency.
: The authors declare that they have no conflicts of interest.
: All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. This article does not contain any studies with human participants performed by any of the authors.