P-284 Could be K-ras a prognostic factor in advanced NSCLC? Relationship with response to platinum based chemotherapy - Camps, Carlos; Blasco, Ana; sancho, Eva; Berrocal, Alfonso; Bayo, Pilar; Martín, María; Tarón, Miguel; Sánchez, Javier; Perez-Tur, Jorge; Rosell, Rafael (Lung cancer (Amsterdam, Netherlands), 2003)