An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Bibliographical noteFunding Information:
“This study was supported in part by the JAXA-ISS Space Medicine Program Grant from the Japan Aerospace Exploration Agency. The authors gratefully thank the astronaut who took part in this study, Dr. Satoshi Furukawa and Dr. Shin Yamada of JAXA for their encouragement to complete this study, Dr. Ikuya Nonaka, National Center Hospital for Mental Nervous and Muscular Disorders, who contributed to start up this project, Professor John Tremarco of Kagoshima University for his help and guidance during the preparation of this manuscript.”
© 2020, The Author(s).
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