Phase II study of pemetrexed as first-line treatment in elderly (≥75) non-squamous non-small-cell lung cancer: Kyoto Thoracic Oncology Research Group Trial 0901.

Phase II study of pemetrexed as first-line treatment in elderly (≥75) non-squamous non-small-cell lung cancer: Kyoto Thoracic Oncology Research Group Trial 0901.