[1] Osped S Maria Misericordia, Emergency Dept, Perugia, Italy
[2] Univ Florence, Dept Expt & Clin Med, Florence, Italy
[3] Osped S Maria Misericordia, Emergency Med Syst, Perugia, Italy
[4] Univ Florence, Dept Hlth Sci, Florence, Italy
[5] Univ Florence, Florence, Italy
[6] Azienda Osped Univ Careggi, Florence, Italy