2011 Focused Update of 2009 American Society of Clinical Oncology Clinical Practice Guideline Update on Chemotherapy for Stage IV Non-Small-Cell Lung Cancer

ASCO produced the 2011 Focused Update based on phase III randomized clinical trials published on maintenance chemotherapy, addressing one question from the 2009 Guideline Update on chemotherapy for stage IV NSCLC: what is the optimal duration of first-line chemotherapy for stage IV NSCLC?