Eosinophilic esophagitis auxiliary diagnosis based on a peptide ligand to eosinophil cationic protein in esophageal mucus of pediatric patients oleh Tafarel Andrade de Souza, Ana Paula Carneiro, Andreia S. Narciso, Cristina P. Barros, Douglas Alexsander Alves, Luciane B. Marson, Tatiane Tunala, Tânia M. de Alcântara, Yara Cristina de Paiva Maia, Peter Briza, Fatima Ferreira, Luiz R. Goulart