1. Center for Research, Innovation and Scholarship in Medical Education , Texas Children’s Hospital, Baylor College of Medicine , 6651 Main St. , Houston, TX 770303 , USA
2. Department of Internal Medicine , Tufts University School of Medicine , Boston, MA , USA
3. Tufts University School of Medicine , Maine Medical Center , Portland, ME , USA
4. Department of Internal Medicine , University of Minnesota , Minneapolis, MN , USA
5. Department of Pediatrics, Texas Children’s Hospital , Baylor College of Medicine , Houston, TX , USA
6. University of California , San Francisco and San Francisco VA Medical Center , San Francisco, CA , USA