Harvey J. Alter, Michael Houghton and Charles M. Rice, are seen on a screen as the three laureates as they are announced as the winners of the 2020 Nobel Prize in Physiology or Medicine during a news conference at the Karolinska Institute in Stockholm, Sweden, October 5, 2020. Claudio Bresciani/TT News Agency/via REUTERS ATTENTION EDITORS – THIS IMAGE WAS PROVIDED BY A THIRD PARTY. SWEDEN OUT. NO COMMERCIAL OR EDITORIAL SALES IN SWEDEN.
