1. 2nd Dental Battalion, 2nd Marines Logistics Group, 2nd Marine Expeditionary Force, Dental Clinic AS100 , Camp Lejeune, NC 28542, USA
2. Department of Research Programs, Walter Reed National Military Medical Center , Bethesda, MD 20889, USA
3. Naval Postgraduate Dental School, Postgraduate Dental College, Uniformed Services University of the Health Sciences, Naval Medical Leader and Professional Development Command , Bethesda, MD 20889, USA