[1] Univ Genoa, Genoa, Italy
[2] Ist Giannina Gaslini, Genoa, Italy
[3] Osped Pediat Bambino Gesu, Rome, Italy
[4] Ist Ortoped Gaetano Pini, Milan, Italy
[5] Osped Pediat Meyer, Florence, Italy
[6] Univ Padua, Padua, Italy
[7] IRCCS Burlo Garofolo, Trieste, Italy
[8] Osped Maggiore Policlin, Fdn IRCCS Ca Granda, Milan, Italy
[9] Azienda Osped Univ Policlin G Martino, Messina, Italy
[10] Azienda Osped Univ Policlin Vittorio Emanuele, Catania, Italy
[11] Univ Brescia, Brescia, Italy
[12] Osped Orvieto, Orvieto, Italy
[13] Univ G dAnnunzio, Chieti, Italy
[14] Seconda Univ Napoli, Naples, Italy
[15] Azienda Osped Card G Panico, Tricase, Italy
[16] Osped Reg Microcitemie, Cagliari, Italy
[17] Policlin Univ A Gemelli, Rome, Italy
[18] Osped A Perrino, Brindisi, Italy
[19] Univ Politecn Marche, Ancona, Italy
[20] Osped Pediat G Salesi, Ancona, Italy
[21] Univ Messina, Messina, Italy
[22] Osped Bambini G Di Cristina, Palermo, Italy
[23] Univ Pisa, Pisa, Italy
[24] Arcispedale S Maria Nuova, Reggio Emilia, Italy
[25] Fdn Policlin San Matteo, IRCCS, Pavia, Italy
[26] Ist Giannina Gaslini, Pediat Reumatol 2, Largo G Gaslini 5, I-16147 Genoa, Italy