1. Technical University of Berlin, Berlin, Germany
2. University of Chicago & Hasso Plattner Institute, University of Potsdam, Chicago, IL, USA
3. University of Chicago, Chicago, IL, USA
4. National Chiao Tung University, Hsinchu, Taiwan Roc
5. University of Technology Sydney, Sydney, New South Wales, Australia
6. University of Technology Sydney, Ultimo, Australia
7. University of California, San Diego & Technische Universität Berlin, Berlin, Germany