Funding for this research was provided by:
National Medical Research Council (NMRC/Fellowship/0030/2016, NMRC/CSSSP/0014/2017)
Received: 13 April 2019
Accepted: 30 July 2019
First Online: 9 August 2019
Ethics approval and consent to participate
: Research using the NACC database was approved by the University of Washington Institutional-Review-Board. Written informed consents were obtained from all the participants.
: Not applicable.
: The author declares no competing interests.