1. Estimating the world cancer burden: Globocan 2000;Parkin;Int J Cancer,2001
2. Cancer statistics;Silverberg;CA Cancer J Clin,1988
3. Lung cancer in the elderly;Gridelli;Eur J Cancer,1997
4. Management of small-cell lung cancer;Gridelli;Crit Rev Oncol Hematol,2002
5. Cancer in the elderly: why so badly treated?;Fentiman;Lancet,1990