[1] Hokkaido University, Sapporo, Japan
[2] University of Wisconsin-Madison, Madison, WI, United States
[3] Northwestern University, Evanston, IL, United States
[4] Georgia Institute of Technology, Atlanta, GA, United States
[5] University of Alberta, Edmonton, AB, Canada
[6] Linkoping University, Norrkoping, Sweden
[7] University of California, San Diego, San Diego, CA, United States
[8] Osaka University, Osaka, Japan