1. The Water Research Foundation, 1199 N. Fairfax Street, Ste. 900, Alexandria, Virginia 22314, United States
2. Environmental Social Sciences Department, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland
3. Center for Innovation Studies (CIRCLE), Lund University, Sölvegatan 16, 223 62 Lund, Sweden