1. Department of Emergency Medicine, Brooke Army Medical Center, Fort Sam Houston, TX 78234, USA
2. Interservice Physician Assistant Program, Ft Campbell, KY 42223, USA
3. Department of Surgery/Trauma ICU, Brooke Army Medical Center, Fort Sam Houston, TX 78234, USA
4. Department of Surgery, Eglin AFG Hospital, Eglin AFG, FL 32542, USA
5. Memorial Hospital North Conway, North Conway, NH 03860, USA
6. The Colorectal Institute, Fort Myers, FL 33912, USA
7. Family Emergency Center, Wilford Hall Ambulatory Surgical Center, Lackland Air Force Base, TX 78236, USA