1. Division of Ophthalmology, Department of Surgery, University of Vermont Larner College of Medicine, Burlington, Vermont, USA.
2. Division of Ophthalmology, Department of Surgery, University of Vermont Medical Center, Burlington, Vermont, USA.
3. Vermont Center on Behavior and Health, Larner College of Medicine, Burlington, Vermont, USA.
4. Ambulatory Care, Porter Medical Center, University of Vermont Health Network, Middlebury, Vermont, USA.