What's more important: Quality of life or survival rate and tumor reduction? It's not a simple answer. Targeted therapies are being looked at closely for their effectiveness and how well lung cancer patients feel while going through treatment. In this video, two medical professionals -- Dr. William Pao from Vanderbilt Ingram Cancer Center and Dr. Corey Langer of the Abramson Cancer Center at the University of Pennsylvania -- offer their perspectives on targeted therapies versus chemotherapies. They touch on how each approach may affect quality of life and compare their effectiveness in fighting disease. Watch now.

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