United States of America: Princeton University, Cornell University,

Germany: Berlin Humboldt University, Max Planck Institute, Leipzig University, and University of Muenster,

France: École Normale Supérieure de Lyon, Bordeaux University, University of Burgundy, Claude Bernard Lyon 1 University,

Sweden: Uppsala University,

Belgium: Katholieke Universiteit Leuven,

Switzerland: ETH Zurich,

Taiwan: Academia shea Nika