1. MedStar Institute for Quality and Safety , Columbia , MD , USA
2. Georgetown University School of Medicine , Washington , DC , USA
3. Rutgers University, Bloustein School of Planning and Public Policy , New Brunswick , NJ , USA
4. Center for Innovations in Quality, Effectiveness, and Safety (IQuESt), Michael E. DeBakey Veterans Affairs Medical Center and Baylor College of Medicine , Houston , Texas , USA