Phillip M Kemp Bohan1, Daniel W Nelson2. 1. Department of Surgery, Brooke Army Medical Center, 3551 Roger Brooke Dr., Fort Sam Houston, TX, 78234, USA. 2. Department of Surgery, William Beaumont Army Medical Center, 5005 N. Piedras St., El Paso, TX, 79920, USA. usarmydoc@mac.com.