1. Portuguese Oncology Institute Coimbra, Coimbra, Portugal.
2. Portuguese Oncology Institute Lisbon, Lisbon, Portugal.
3. Life and Health Science Research Institute, School of Health Sciences, University of Minho, Braga, Portugal.
4. ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Braga, Portugal.
5. Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil.
6. Laboratory of Medical Investigation 14, Faculty of Medicine, University of São Paulo, São Paulo, Brazil.
7. Surgery Department, Coloproctology Unit, Braga Hospital, Braga, Portugal.