⚠️BREAKING: huge Chloroquine and Hydroxychloroquine study of 96,000 patients at 671 hospitals found:
📌Increased risk of DEATH by 33-45%
📌Increased risk of ventricular arrhythmia by 2.3x to 5x.
📌Not a trial but a large longitudinal study.
🧵#COVID19 https://t.co/SAD20nESOs pic.twitter.com/GPAulxCwNw

— Eric Feigl-Ding (@DrEricDing) May 22, 2020