[1] European Acad Paediat, Brussels, Belgium
[2] Med Univ Warsaw, Dept Pediat Gastroenterol & Nutr, Warsaw, Poland
[3] Young European Acad Paediat, Brussels, Belgium
[4] Cova Beira Univ Hosp Ctr, Pediat Dept, Covilha, Portugal
[5] European Confederat Primary Care Paediat, Lyon, France
[6] Kinder Permanence Spital Zollikerberg, Zollikerberg, Switzerland
[7] Ariel Univ, Adelson Sch Med, Ariel, Israel
[8] Maccabi Hlth Serv, Tel Aviv, Israel
[9] Dana Dwek Childrens Hosp, Tel Aviv Sourasky Med Ctr, Tel Aviv, Israel
[10] Assoc Francaise Pediatrie Ambulatoire, Talence, France
[11] Childcare Worldwide, Padua, Italy
[12] Med Univ Graz, Dept Pediat & Adolescent Med, Graz, Austria
[13] Univ Rzeszow, Med Fac, Rzeszow, Poland
[14] Med Univ Warsaw, Dept Pediat Hematol & Oncol, Warsaw, Poland
[15] European Univ Cyprus, Sch Med, Nicosia, Cyprus
[16] Larnaca Gen Hosp, Paediat Dept, Larnax, Cyprus