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自从1974年至1977年在四川省冕宁县四个公社的观察结果表明用补充亚硒酸钠的方法预防急型及亚急型克山病有明显效果以来,硒缺乏与克山病发病之间的关系引起许多人的兴趣,但人们关心长期补充硒使急型和亚急型的病人减少了,是否自然慢型克山病的病人会
Since the observation of four communes in Mianning County, Sichuan Province from 1974 to 1977, that selenium deficiency has been associated with the onset of Keshan disease with the addition of sodium selenite to prevent acute and subacute Keshan disease Of the relationship aroused the interest of many people, but people are concerned about the long-term supplementation of selenium to reduce the number of acute and subacute type of patients, whether the natural slow Keshan disease patients will