Letter to Trump regarding Covid-19 from 500 Doctors Source: https://www.spreadthis.info:4443/01.%20%20%20%20%20Covid-19%20Expert%20Opinions,%20Narratives,%20Concerns%20&%20Publications/Medical%20Doctors%20&%20PhD/Letter%20to%20Trump%20regarding%20Covid-19%20from%20500%20Doctors.pdf