H Tien, B Sawadsky, M Lewell,
M Peddle… - Canadian Journal of …, 2020 - cambridge.org
… disease 2019 (COVID-19) pandemic, … for COVID-19. A total of 52.3% of these were completed
by CCLA, 28.9% were completed by FW aircraft, and 16.6% were completed by RW aircraft…