[1] Univ Messina, Messina, Italy
[2] Univ Federico II, SIP Soc Italiana Pediat, Naples, Italy
[3] Hosp San Giovanni Calib Fatebenefratelli, SIN Soc Italiana Neonatol, Rome, Italy
[4] Univ Roma La Sapienza, SIMRI Soc Italiana Malattie Resp Infantili, Rome, Italy
[5] Fdn IRCCS Policlin San Matteo, SIAIP Soc Italiana Allergol & Immunol Pediat, Pavia, Italy
[6] Fdn IRCCS CaGranda Osped Maggiore Policlin, AMIETIP Acad Med Infermierist Emergenza & Terapia, Major Hosp Polyclin, Bologna, Italy
[7] Pugliese Ciaccio Hosp, SIMEUP Soc Italiana Med Emergenza Urgenza Pediat, Catanzaro, Italy
[8] Univ Hosp Ancona Umberto IGM Lancisi G Salesi, SIMP Soc Italiana Med Perinatale, Ancona, Italy
[9] Univ Hosp Meyer, SICP Soc Italiana Cardiol Pediat, Florence, Italy
[10] Univ Catania, SINP Soc Italiana Neurol Pediat, Catania, Italy
[11] San Giuseppe Moscati Hosp, SIPO Soc Italiana Pediat Osped, Aversa, Italy
[12] Local Hlth Author Caserta, SIPPS Soc Italiana Pediat Prevent & Sociale, Caserta, Italy
[13] Bambino Gesu Pediat Hosp, SITIP Soc Italiana Infettivol Pediat, Rome, Italy
[14] Local Hlth Author Naples 1 Ctr, FIMP Federaz Italiana Med Pediat, Naples, Italy
[15] Florence City Council, SICuPP Soc Italiana Cure Primarie Pediat, Florence, Italy
[16] IRCCS Univ Hosp Bologna, AIEOP Soc Italiana Ematol & Oncol Pediat, Bologna, Italy
[17] Univ Hosp Agostino Gemelli, SIMGePeD Soc Italiana Malattie Genet Pediat & Disa, Rome, Italy
[18] Alma Mater Studiorum Univ Bologna, Bologna, Italy
[19] Univ Hosp Verona, Verona, Italy
[20] Osped Inferm Biella, Biella, Italy
[21] Univ Turin, Turin, Italy
[22] Univ Parma, Parma, Italy
[23] Univ Palermo, Palermo, Italy
[24] Univ Hosp Padova, Dept Womens & Childrens Hlth, Neonatal Intens Care Unit, Padua, Italy