RT Journal Article SR Electronic T1 Long-term social distancing during COVID-19: A social isolation crisis among seniors? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E588 OP E588 DO 10.1503/cmaj.75428 VO 192 IS 21 A1 Heidi Oi-Yee Li A1 David Huynh YR 2020 UL http://www.cmaj.ca/content/192/21/E588.abstract