Funding for this research was provided by:
National Institute on Aging (R01 AG052537)
National Institute of Child Health and Human Development (P2C HD042828)
Received: 1 August 2019
Accepted: 23 September 2019
First Online: 23 October 2019
Ethics approval and consent to participate
: Ethics approval for the current study was obtained from the University of Utah’s Institutional Review Board (IRB_00099861), Mount Saint Vincent University’s Research Ethics Board (2018–047), Singapore Management University’s IRB (IRB-18-031-A034(318)), Hanoi Medical University’s Independent Review Board in Bio-medical Research (IRB No. 00003121) and Vietnam’s Ministry of Health. Written informed consent was obtain from all study participants.
: Not applicable.
: The authors declare that they have no competing interests.