#BestACR20Tweets RT @doctorRBC : Tocilizumab NOT effective in preventing mechanical ventilation or death in moderately ill COVID-19 pts. Double-blind, Placebo, RCT (n=243) @RheumNow #ACR20 Abs#L07 #ACRbest https://t.co/Gi5FpodeKf https://t.co/bTk8n7dNni