1. Office of Medical Student Research, College of Osteopathic Medicine, Oklahoma State University Center for Health Sciences , Tulsa , OK , USA
2. Department of Osteopathic Manipulative Medicine , College of Osteopathic Medicine, Oklahoma State University Center for Health Sciences , Tulsa , OK , USA
3. Department of Psychiatry and Behavioral Sciences , College of Osteopathic Medicine, Oklahoma State University Center for Health Sciences , Tulsa , OK , USA