Funding for this research was provided by:
Canadian Consortium on Neurodegeneration in Aging
ALS Society of Canada
Shanghai Pujiang Program (19PJ1410300)
National Natural Science Foundation of China (82071430)
Fundamental Research Funds for the Central Universities
Intramural Research Program of the NIH, National Institute on Aging (Z01-AG000949-02)
Received: 10 March 2021
Accepted: 14 April 2021
First Online: 23 April 2021
: Informed consent was obtained from each study participant in accordance with the ethics review boards at Sunnybrook Health Sciences Centre (Canada) or the National Institute on Aging (US).
: Not applicable.
: The authors report no competing interests.