1. Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal.
2. ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal.
3. Department of Pediatric Surgery, São João Central Hospital, Porto, Portugal.
4. Department of Physiology, Faculty of Medicine, University of Porto, Porto, Portugal.
5. Department of Pediatric Surgery, Hospital of Braga, Braga, Portugal.