1. Department of Osteopathic Principles and Practice, Alabama College of Osteopathic Medicine, Dothan, AL 36303, USA
2. Health Professions Division, Nova Southeastern University, Dr. Kiran C Patel College of Osteopathic Medicine, Davie, FL 33328, USA
3. Department of Anesthesia Division Pain Medicine, Navy Medicine Readiness and Training Command Camp Pendleton, Camp Pendleton, CA 92055-5191, USA