1. Oklahoma State University Center for Health Sciences , Tulsa , OK 74107 , USA
2. Office of Medical Student Research , Oklahoma State University College of Osteopathic Medicine at Cherokee Nation , Tahlequah , OK , USA
3. Department of Pediatrics , University of Oklahoma School of Community Medicine , Tulsa , OK , USA
4. College of Public Health – Schusterman Center , University of Oklahoma Health Sciences Center , Tulsa , OK , USA
5. Department of Psychiatry and Behavioral Sciences , Oklahoma State University Center for Health Sciences , Tulsa , OK , USA