1 University of Toronto Department of Family and Community Medicine and Division of Clinical Public Health, Dalla Lana School of Public Health, Toronto, Ontario, Canada. farhan.asrar@utoronto.ca.
2 International Space University, Strasbourg, France. farhan.asrar@utoronto.ca.
3 Credit Valley Hospital and Mississauga Hospital Family Medicine Teaching Units, and the Institute for Better Health, Trillium Health Partners, Mississauga, Ontario, Canada. farhan.asrar@utoronto.ca.
4 Canadian Space Agency, John H. Chapman Space Centre, Longueuil, Quebec, Canada.
5 Earth Science Division, National Aeronautics and Space Administration, Washington, DC, USA.
6 Booz Allen Hamilton, McLean, VA, USA.
7 LEAP Biosystems, Halifax, Nova Scotia, Canada.
8 United Nations Office for Outer Space Affairs, Vienna, Austria.
9 University of Toronto Department of Family and Community Medicine and Division of Clinical Public Health, Dalla Lana School of Public Health, Toronto, Ontario, Canada.
10 Department of Neurology/Center for Space Medicine, Baylor College of Medicine, Houston, TX, USA.