1. Department of Health Policy and Management, Indiana University Richard M. Fairbanks School of Public Health , Indianapolis, Indiana, USA
2. Clem McDonald Center for Biomedical Informatics, Regenstrief Institute , Indianapolis, Indiana, USA
3. Anesthesiology, Wake Forest University School of Medicine, Winston-Salem , North Carolina, USA
4. MedStar Health Research Institute
5. School of Medicine, Indiana University , Indianapolis, Indiana, USA