| 1. | The symposium is jointly sponsored by the american society of clinical oncology , the american society for therapeutic radiology and oncology , the american gastroenterological association institute and the society of surgical oncology 该研讨会由美国肿瘤临床协会、美国放射治疗学和肿瘤学协会、美国胃肠病学会学院和外科肿瘤学会共同主办。 |