1 Department of Family Medicine and Community Health, University of Wisconsin School of Medicine and Public Health, Milwaukee, WI, USA.
2 Department of Emergency Medicine, National Children's Hospital; Faculty of Medicine, University of Health Sciences, Vientiane, Lao PDR, USA.
3 Section of Pediatric Emergency Medicine, Children's Hospital Colorado; Department of Pediatrics-Emergency Medicine, University of Colorado School of Medicine, Denver, CO, USA.
4 Department of Emergency Medicine, Denver Health Medical Center, Denver, CO, USA.
5 Faculty of Medicine, University of Health Sciences, Vientiane, Lao PDR, USA.
6 Department of Health Informatics and Administration, College of Health Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
7 Department of Pediatrics, Division of Emergency Medicine, University of Pennsylvania; Division of Emergency Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA.