50: LENGTH OF PRE-ECMO MECHANICAL VENTILATION IS NOT ASSOCIATED WITH MORTALITY IN PATIENTS WITH COVID-19. (15th December 2022) - Zhang, Chengda; Zakhary, Bishoy; White, Nicole; Heinsar, Silver; Burrell, Aidan; Zaaqoq, Akram; Jacobs, Jeffrey; Dalton, Heidi; Labib, Ahmed; Suen, Jacky; Mariani, Silvia; Li Bassi, Gianluigi; et al.