1. Cancer Statistics, 2003;Jemal;CA Cancer J. Clin.,2003
2. Ferlay G, Bray J, Pisani P, Parkin DM. Globocan 2000: Cancer incidence, mortality and prevalence worldwide. Version 1.0. IARC Cancer Base 5 Lyon, IARC Press, 2001. Available at
3. US Department of Health and Human Services. Healthy People 2010. 2nd ed. With understanding and improving health and objectives for improving health, 2 vols. Washington, DC: US Government Printing Office, 2000
4. Pileggi C, Carbone V, Pavia M, Angelillo IF. Patients’ perceptions and related behaviors on role of primary care physician in Italy. Eur J Public Health, in press
5. Stata Corporation. Stata Reference Manual, release 6.0. College Station, 1999