1. Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, VA, USA;
2. Construction Engineering and Management, Myers Lawson School of Construction, Virginia Tech, Blacksburg, VA, USA;
3. Department of Medicine, University of California at San Francisco, CA, USA;
4. School of Public Health, University of California at Berkeley, CA, USA;
5. Virginia Tech – Wake Forest School of Biomedical Engineering and Sciences Blacksburg, Blacksburg, VA, USA