Squamous and small cell carcinomas of the lung: similarities and differences concerning the role of tobacco smoking.
De Stefani E, Boffetta P, Ronco AL, Brennan P, Correa P, Deneo-Pellegrini H, Gutiérrez LP, Mendilaharsu M. Squamous and small cell carcinomas of the lung: similarities and differences concerning the role of tobacco smoking. Lung Cancer. 2005 Jan; 47(1):1-8.