D. Valentini
Pediatric Unit, Pediatric Emergency Department (DEA), Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
A. Carfi
Department of Geriatrics, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
A. Di Paola
Department of Psychology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
A. Yarci-Carrión
Department of Microbiology, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa, Madrid, Spain
Alberto Villani
Pediatric Unit, Pediatric Emergency Department (DEA), Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
Chair of Pediatrics, Department of Systems Medicine, University of Rome "Tor Vergata", 00133 Rome, Italy
D. Real de Asúa ⁎ 
Department of Medicine, School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
Department of Internal Medicine, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa, Madrid, Spain