方法2003年3月~12月在哈尔滨医科大学附属肿瘤医院宁养院接受宁养服务的中度癌痛患者108例,单中心开放试验给药,自身对照方法进行研究,观察周期28天。
Methods : From March to December of 2003,108 patients with MACP were administered by single central opening test and studied by own control for 28 days .