3 Department of Surgery, East Carolina University, Brody School of Medicine, E. 5th St., Greenville, NC, 27858, USA. philip.stahel@gmail.com.
4 Department of Specialty Medicine, Rocky Vista University, College of Osteopathic Medicine, 8401 S. Chambers Rd., Parker, CO, 80134, USA. philip.stahel@gmail.com.