1. Lighting Research Center, School of Architecture, Rensselaer Polytechnic Institute, Troy, NY, USA
2. The Cecil G. Sheps Center for Health Services Research, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
3. Department of Family Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
4. School of Social Work, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
5. Department of Biostatistics at the Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
6. Department of Opthalmology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA