title: Pitfalls in the assessment of prognostic factors.
authors: Konradin
authors: K
authors: Metze
mesh_terms: D014408:Biomarkers, Tumor; D002289:Carcinoma, Non-Small-Cell Lung / Q000188:drug therapy* / Q000235:genetics*; D066246:ErbB Receptors / Q000235:genetics*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000188:drug therapy* / Q000235:genetics*; D008297:Male; D011518:Proto-Oncogene Proteins / Q000235:genetics*; D018631:ras Proteins / Q000235:genetics*
chemical_list: D014408:Biomarkers, Tumor; D011518:Proto-Oncogene Proteins; D066246:ErbB Receptors; D018631:ras Proteins