[1] Hosp Univ Infantil Virgen Rocio, Unidad Gest Clin Pediat, Unidad Gastroenterol Hepatol & Nutr Pediat, Seville, Spain
[2] Hosp Univ Cent Asturias, Area Gest Clin Pediat, Secc Gastroenterol Hepatol & Nutr Pediat, Oviedo, Spain
[3] Ctr Salud Valencia Serreria II, Pediat, Valencia, Spain
[4] Hosp Univ Quiron Dexeus, Alergia Dexeus, Barcelona, Spain
[5] Ctr Salud Tacoronte, Pediat, Tacoronte, Santa Cruz De T, Spain
[6] Hosp Alvaro Cunqueiro, Serv Pediat, Unidad Gastroenterol Hepatol & Nutr Pediat, Vigo, Pontevedra, Spain
[7] Ctr Salud Tejina, Pediat, San Cristobal De La Lagu, Santa Cruz De T, Spain
[8] Hosp Vithas Nisa Pardo Aravaca, Alergia Pediat, Madrid, Spain
[9] Ctr Salud Amante Laffon, Pediat EBAP, Seville, Spain
[10] Hosp Univ Puerta Hierro Majadahonda, Unidad Gastroenterol & Nutr, Serv Pediat, Madrid, Spain
[11] Hosp Univ La Fe, Secc Gastroenterol Hepatol & Nutr Pediat, Valencia, Spain