Trial of Pemetrexed or Pemetrexed With Gemcitabine for Patients With Advanced Lung Cancer Who Are Not Eligible for Platinum-Based Chemotherapy and Have Not Previously Been Treated With Chemotherapy

Trial of Pemetrexed or Pemetrexed With Gemcitabine for Patients With Advanced Lung Cancer Who Are Not Eligible for Platinum-Based Chemotherapy and Have Not Previously Been Treated With Chemotherapy