[1] IRCCS Burlo Garofolo, Inst Maternal & Child Hlth, Clin Epidemiol & Publ Hlth Res Unit, Via Istria 65-1, I-34137 Trieste, Italy
[2] Univ Udine, DAME, Dept Med Area, Via Colugna 50, I-33100 Udine, Italy
[3] IRCCS Burlo Garofolo, Inst Maternal & Child Hlth, Sci Direct, Via Istria 65-1, I-34137 Trieste, Italy
[4] Friuli Centrale Healthcare & Univ Trust, Inst Hyg & Clin Epidemiol, Via Colugna 50, I-33100 Udine, Italy
[5] Azienda Sanitaria Friuli Occidentale, Med Directors Off, Via Piave 54, I-33170 Pordenone, Italy
[6] Univ Hosp Ctr Rijeka, Dept Pediat, Kresimirova 42, Rijeka 51000, Croatia
[7] Green Infrastruct Ltd, Fallerovo Setaliste 22, Zagreb 10000, Croatia
[8] Aghia Sophia Childrens Hosp Thivon & Papadiamanto, Inst Child Hlth, Athens 11527, Greece
[9] Jozef Stefan Inst, Jamova 39, SI-1000 Ljubljana, Slovenia