1. Oncology Department, Portuguese Institute of Oncology, Porto, 4200 072, Portugal
2. Molecular Oncology & Viral Pathology Group, Research Center of Portuguese Institute of Oncology, Porto, 4200 072, Portugal
3. Research Department, Portuguese League Against Cancer of Northern Region, Porto, 4200 172, Portugal
4. Faculty of Health Sciences, CEBIMED, Fernando Pessoa University, Porto, 4200 150, Portugal