1. Department of Pediatric Gastrenterology and Pediatrics Centro Hospitalar Universitário São João Porto Portugal
2. Department of Pediatrics Hospital Sousa Martins, Unidade Local de Saúde da Guarda Guarda Portugal
3. Faculty of Medicine University of Porto Porto Portugal
4. Department of Children and Youth Hospital Professor Doutor Fernando Fonseca Amadora Portugal
5. Department of Pathology Faculty of Medicine, Centro Hospitalar Universitário São João Porto Portugal
6. Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Instituto de Investigação e Inovação na Saúde (I3S) University of Porto Porto Portugal