Funding for this research was provided by:
Japan Society for the Promotion of Science (JP26117006, 19H05559, 19K21314, 19K07841, 17K09776, 19H01061)
Japan Agency for Medical Research and Development (JP20dk0207045)
Received: 30 March 2020
Accepted: 7 May 2020
First Online: 3 June 2020
Ethics approval and consent to participate
: The present study was approved by the Ethics Committee of Niigata University (G2019–0020). Written informed consent for autopsy including the use of tissues for research purposes was obtained from the patients’ family.
: Family members have consented to publication.
: The authors declare that they have no competing interests.