How many students are at the largest university in Switzerland at which Philip Kraft has lectured?
Philip Kraft:  He has lectured at the University of Bern, the University of Zurich, and the ETH Zurich. University of Zurich: The University of Zurich (UZH, German: "Universität Zürich" ), located in the city of Zürich, is the largest university in Switzerland, with over 26,000 students.
over 26,000