治疗方法对照组给予常规GP化疗方案： 化疗前常规行生化、血常规等检查，

Treatment method The <br>control group was given conventional GP chemotherapy: <br><br>routine biochemical and blood routine examinations were performed before chemotherapy, and those with significant white blood cell reduction were given leukocyte-raising drugs. Hydrate 1 day before chemotherapy, gemcitabine 1g/m2, intravenous on the 1st and 8th day, cisplatin 25mg/m2, intravenous on the 1st to 3rd day. During chemotherapy, ECG monitoring, hydration, acid suppression, antiemetic, and gastric mucosal protection were given symptomatic treatment. Repeat every 21 days for a total of 3 cycles of chemotherapy [8].

Treatment.<br>The control group was given a routine GP chemotherapy programme:<br><br>Before chemotherapy routine line bio-chemical, blood routine and other examinations, blood white blood cells decreased significantly to give white blood cell medication. 1 day before chemotherapy hydration, Gissythambin 1g/m2, 1st and 8th day static point, shun platinum 25mg/m2, 1st to 3rd day static point. During chemotherapy, electrostectric monitoring, hydration, acid suppression, vomiting, protection of the stomach mucosa and other treatment. Repeat every 21 days for a total of 3 cycles of chemotherapy.

therapeutic method<br>The control group was given conventional GP chemotherapy<br>Before chemotherapy, routine biochemical and blood routine examinations were performed. Patients with significant decrease in blood white blood cells were treated with drugs for increasing white blood cells. 1 day before chemotherapy, gemcitabine 1g / m2, intravenous on day 1 and 8, cisplatin 25 mg / m2, intravenous on day 1-3. During the chemotherapy, the patients were given ECG monitoring, hydration, acid suppression, antiemetic, gastric mucosa protection and other symptomatic treatment. The chemotherapy was repeated every 21 days for 3 cycles [8].<br>