题名 | A prospective randomized trial of 5-fluorouracil versus 5-fluorouracil and high-dose leucovorin versus 5-fluorouracil and methotrexate in previously untreated patients with advanced colorectal carcinoma. |
链接 | http://ascopubs.org/doi/pdf/10.1200/JCO.1987.5.10.1559 |
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