Funding for this research was provided by:
Research Grant for New Scholar by The Thailand Research Fund and Office of the Higher Education Commission (MRG6080130)
Grants for Development of New Faculty Staff, Ratchadaphiseksomphot Endowment Fund (DNS 61-004-37-001-2)
The Thailand Research Fund and the Medical Research Council (UK), Newton Fund (DBG 5980006 and MR/N01247X/1)
The Scholarship from the Graduate School, Chulalongkorn University to commemorate the 72nd anniversary of his Majesty King Bhumibol Aduladej (GCUGE12-2)
The 90th Anniversary Chulalongkorn University Fund (GCUGR1125613083M)
The Overseas Research Experience Scholarship for Graduate Students from the Graduate School and Grant for Join Funding (Ratchadaphiseksomphot Endowment Fund), Chulalongkorn University
Received: 22 April 2020
Accepted: 10 September 2020
First Online: 9 October 2020
Ethics approval and consent to participate
: The study protocol was approved by IRB of Tohoku University School of Medicine, Sendai, Japan. Informed consent was obtained.
: Not applicable.
: The authors declare that they have no competing interests.