1. Department of Quantitative Health Sciences, UMass Chan Medical School, Worcester
2. VA Central Western Massachusetts Healthcare System, Leeds, MA
3. Center for Access & Delivery Research and Evaluation (CADRE) and Veterans Rural Health Resource Center-Iowa City (VRHRC-IC), Iowa City VA Health Care System, Iowa City, IA
4. Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA