1. Civil, Construction, and Environmental Engineering, North Carolina State University, 915 Partners Way, Campus Box 7908, Raleigh, North Carolina 27606, United States
2. Civil and Environmental Engineering, University California Berkeley, Berkeley, California 94720, United States
3. Ifakara Health Institute, Bagamoyo, Tanzania
4. Environmental Engineering & Science, Department of Civil and Environmental Engineering, Stanford University, Stanford, California 94305, United States
5. Woods Institute for the Environment, Stanford University, Stanford, California 94305, United States