[1] IRCCS Ist Giannina Gaslini, UOC Clin Pediat & Reumatol, Genoa, Italy
[2] Univ Genoa, Dipartimento Neurosci Riabilitaz Oftalmol Genet &, Genoa, Italy
[3] IRCCS Ist Giannina Gaslini, Dipartimento Epidemiol & Biostat, Genoa, Italy
[4] Ain Shams Univ, Fac Med, Cairo, Egypt
[5] Inst Child Hlth, Pediat Rheumatol Div, Kolkata, India
[6] SRCC Childrens Hosp, Sect Pediat Rheumatol, Mumbai, Maharashtra, India
[7] Mahidol Univ, Fac Med Ramathibodi Hosp, Pediat Dept, Rheumatol Div, Bangkok, Thailand
[8] RG Kar Med Coll, Pediat Rheumatol Clin, Kolkata, India
[9] IRCCS Osped Pediat Bambino Gesu, Div Rheumatol, Rome, Italy
[10] Sir Ganga Ram Hosp, Inst Child Hlth, Div Pediat Rheumatol, New Delhi, India
[11] Benha Univ, Fac Med, Banha, Egypt
[12] Alexandria Univ, Fac Med, Alexandria, Egypt
[13] Tanta Univ, Fac Med, Tanta, Egypt
[14] Cairo Univ, Fac Med, Cairo, Egypt
[15] Univ Estado Rio de Janeiro, Pediat Rheumatol Div, Adolescent Hlth Care Unit, Rio De Janeiro, Brazil
[16] Univ Fed Rio de Janeiro, Dept Internal Med, Rio De Janeiro, Brazil
[17] Hosp Pediat Garrahan, Serv Inmunol & Reumatol, Buenos Aires, DF, Argentina
[18] Univ Milan, Dept Clin Sci & Community Hlth, Milan, Italy
[19] Univ Hosp Meyer, Div Rheumatol, Florence, Italy
[20] Natl Med Res Ctr Childrens Hlth, Rheumatol Div, Moscow, Russia
[21] Sechenov First Moscow State Med Univ, Moscow, Russia
[22] Queen Rania Childrens Hosp, Dept Immunol Rheumatol & Allergy, Amman, Jordan
[23] St Petersburg State Pediat Med Univ, St Petersburg, Russia
[24] Fdn IRCCS Ca Granda Osped Maggiore Policlin, UOC Pediat Media Intensita Cure, Milan, Italy
[25] Suez Canal Univ, Fac Med, Rheumatol Dept, Ismailia, Egypt
[26] King Faisal Specialist Hosp & Res Ctr, Dept Pediat, Riyadh, Saudi Arabia
[27] Univ Palermo, Dipartimento Promise G DAlessandro, Palermo, Italy
[28] UNESP, Pediat Dept, Hosp Clin Botucatu Med Univ, Botucatu, SP, Brazil
[29] Azienda Osped Univ Gaetano Martino Messina, Serv Immunoreumatol Pediat, UOC Pediat, Messina, Italy
[30] Azienda Osped Univ Gaetano Martino, UO Nefrol & Reumatol Pediat, Messina, Italy
[31] Kanazawa Univ, Sch Med, Inst Med Pharmaceut & Hlth Sci, Dept Pediat, Kanazawa, Ishikawa, Japan
[32] Osped Vito Fazzi, Pediat Unit, Lecce, Italy
[33] AON SS Antonio & Biagio & Cesare Arrigo Childrens, Pediat Unit, Alessandria, Italy