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epa08721716 Thomas Perlmann (R), Secretary of the Nobel Assembly at the Karolinska Institut and of the Nobel Committee for Physiology or Medicine, announces the winners of the 2020 Nobel Prize in Physiology or Medicine during a press conference at the Karolinska Institute in Stockholm, Sweden, 05 October 2020. (L-R) on the screen are Harvey J. Alter, Michael Houghton and Charles M Rice, the three laureates who win the 2020 Nobel Medicine Prize. (KEYSTONE/EPA/Claudio Bresciani) POOL SWEDEN OUT