为了贯彻落实伟大领袖毛主席光辉的《六·二六》指示和敬爱的周总理对肿瘤工作的一系列指示精神,进一步探讨我国食管癌发病的原因和条件,以便采取有效的预防措施,降低其发病率。全国肿瘤防治研究办公室根据7 4年华北三省一市食管癌研究协作计划,组织了有中国科学院、中国医学科学院和有关省、市医务科研人员参加的食 In order to implement the instructions of the great leader Chairman Mao Guanghui’s “6·26” and the beloved Premier Zhou’s series of instructions on oncology work, further explore the causes and conditions of the onset of esophageal cancer in China in order to take effective preventive measures and reduce it. Incidence rate. The National Cancer Prevention and Research Office organized foods for the participation of medical researchers of the Chinese Academy of Sciences, the Chinese Academy of Medical Sciences, and relevant provinces and municipalities in accordance with the 74-year-old research program for esophageal cancer research in three provinces and one city in North China.