[1] Lausanne Univ Hosp, Dept Woman Mother Child, Pediat Immunol Allergol & Rheumatol Unit, Lausanne, Switzerland
[2] Hop Enfants Ibnou Rochd Casablanca, Casablanca, Morocco
[3] Hop Andre Mignot, CH Versailles, Paris, France
[4] Ctr Hosp Univ Kremlin Bicetre, Paris, France
[5] UZ Leuven, Leuven, Belgium
[6] Kinderspital Zurich, Zurich, Switzerland
[7] Ctr Hosp Univ Clermont Ferrand, Clermont Ferrand, France
[8] CHRU Besancon, Besancon, France
[9] Luzerner Kantonspital, Luzern, Switzerland
[10] CHU Bordeaux, Bordeaux, France
[11] Univ Kinderspital Beider Basel, Basel, Switzerland
[12] CHRU Best, Brest, France
[13] Hop Robert Debre, Paris, France
[14] Hop Nord Marseille, CHU Marseille, Marseille, France