| Affiliation: | 1. Department of Emergency Medicine, Boston Children''s Hospital, 300 Longwood Ave, Boston, MA 02115, United States of America;2. Department of Emergency Medicine, Floating Hospital for Children/Tufts Medical Center, 800 Washington Street, Boston, MA 02111, United States of America;3. Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA 02114, United States of America;1. Department of Emergency Medicine, Stroger Cook County Hospital, Chicago, IL, United States of America;2. Department of Emergency Medicine, South Suburban Hospital, Hazel Crest, IL, United States of America;1. Department of Emergency Medicine, San Antonio Military Medical Center, San Antonio, TX, United States of America;2. Greater San Antonio Emergency Physicians, Methodist Hospital System, San Antonio, TX, United States of America;1. Pediatric Emergency Department, BioCruces Bizkaia Health Research Institute, Bilbao, Basque Country, Spain;2. Department, Laboratory, BioCruces Bizkaia Health Research Institute, Bilbao, Basque Country, Spain;3. Department of Epidemiologic Unit, Cruces University Hospital, BioCruces Bizkaia Health Research Institute, Bilbao, Basque Country, Spain |
