1. Department of Industrial and Systems Engineering, NC State University, Raleigh, NC, USA
2. Department of Business Management, Poole College of Management, NC State University, Raleigh, NC, USA
3. Department of Emergency Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
4. Department of Family Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
5. Asheville Pulmonary and Critical Care Associates, Asheville, NC, USA