1. Office of Medical Student Research, Oklahoma State University Center for Health Sciences, Tulsa, OK, USA
2. Office of Research, University of Tulsa, Tulsa, OK, USA
3. Kansas City University of Medicine and Biosciences, College of Osteopathic Medicine, Joplin, MO, USA
4. Department of Psychiatry and Behavioral Sciences, Oklahoma State University Center for Health Sciences, Tulsa, OK, USA