https://www.cnbc.com/video/2020/10/06/former-merck-vaccine-head-dr-soren-christiansen-on-covid-19-vaccine-timeline.html?__source=flipboard
https://www.cnbc.com/video/2020/10/06/former-merck-vaccine-head-dr-soren-christiansen-on-covid-19-vaccine-timeline.html?__source=flipboard