1 Walter Reed National Military Medical Center, Department of Medicine, Bethesda, Md; Uniformed Services University of the Health Sciences, Bethesda, Md. Electronic address: joshua.d.hartzell.mil@mail.mil.
2 Uniformed Services University of the Health Sciences, Bethesda, Md.
3 Walter Reed National Military Medical Center, Department of Medicine, Bethesda, Md; Uniformed Services University of the Health Sciences, Bethesda, Md.