Funding for this research was provided by:
Japan Agency for Medical Research and Development (JP17ek0109132h003)
Japan Society for the Promotion of Science (17H04335)
Received: 17 December 2018
Accepted: 28 January 2019
First Online: 7 February 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Tohoku University School of Medicine (2015-1-130, 2015-1-735, 2017-1-880, 2018-1-81). All samples were obtained after receiving written informed consent. All experiments handling human blood cells were conducted in accordance with the principles of the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
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