The Charité – Universitätsmedizin Berlin is a joint medical faculty of the Humboldt University and Free University Berlin. Today as numerous Collaborative Research Centres (CRC) of the Deutsche Forschungsgemeinschaft and is one of Germany's most research-intensive medical institutions. From 2012 to 2020, it was ranked by "Focus" as the best of over 1000 hospitals in Germany. In 2019, 2020 and 2021 "Newsweek" ranked the Charité as sixth best hospital in the world and best in Europe. More than half of all German Nobel Prize winners in Physiology or Medicine, including Emil von Behring, Robert Koch and Paul Ehrlich, have worked at the Charité. Several politicians and diplomats have been treated at the Charité, including German Chancellor Angela Merkel, who underwent meniscus treatment at the Orthopaedic Department, Yulia Tymoshenko from Ukraine, and, more recently, Russian opposition leader Alexei Navalny, who had received treatment at the hospital due to his poisoning in August 2020.