1. Silent Spring Institute, Newton, Massachusetts, USA
2. Public Health Institute, Oakland, California, USA
3. Participant Advisory Council, Child Health and Development Studies, Public Health Institute, Oakland, California, USA
4. Plumbline Coaching and Consulting, Omaha, Nebraska, USA
5. Department of Biostatistics, School of Public Health and Health Science, University of Massachusetts Amherst, Amherst, Massachusetts, USA
6. Computer Science, Harvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, Massachusetts, USA