1 Department of Emergency Medicine, San Antonio Uniformed Services Health Education Consortium, San Antonio, TX, United States. Electronic address: william.t.davis294.mil@mail.mil.
2 Portia Statistical Consulting LLC, San Antonio, TX, United States.
3 Department of Emergency Medicine, San Antonio Uniformed Services Health Education Consortium, San Antonio, TX, United States.
4 United States Army Institute of Surgical Research, San Antonio, TX, United States.