1 Institutul Oncologic "Prof. Dr. I.Chiricuţă", Str. Republicii, 34-36, 400015, Cluj-Napoca, Romania. Electronic address: luciana.neamtiu@gmail.com.
2 European Commission, Directorate General Joint Research Centre, Directorate F - Health, Consumers and Reference Materials, Unit F1 "Health in Society", Via E. Fermi 2749, TP 127, I-21027, Ispra, VA, Italy.
3 Independent Researcher, Sant Vicenç de Montalt (Barcelona), Spain.
4 Unidad de Bioestadistica Clinica, Hospital Universitario Ramon y Cajal (IRYCIS), CIBER Epidemiologia y Salud Publica (CIBERESP), Ctra. Colmenar Km. 9,100, 28034, Madrid, Spain; Universidad Francisco de Vitoria, Ctra. Pozuelo-Majadahonda Km. 1,800, Madrid, Spain.