1. Office of Medical Affairs, UnityPoint Health, Des Moines, Iowa;
2. Office of Research, UnityPoint Health Des Moines, Des Moines, Iowa;
3. Pulmonary and Critical Care, The Iowa Clinic, Des Moines, Iowa;
4. Trauma Services, UnityPoint Health, Des Moines, Iowa;
5. Department of Trauma Surgery, The Iowa Clinic, Des Moines, Iowa