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越南人约15％受地方性甲状腺肿的威胁。为了弄清当地各种致甲状腺肿因素,我们在近十年来才出现甲状腺肿的低洼地区Vancon调查了935人,在有甲状腺肿流行并经碘盐防治的高原地区Dich Giao调查了619人。在Dich Giao致甲状腺肿的木薯占膳食热量的一半。甲状腺肿的患病率在Vancon为45％,在Dich Giao为28％。在Vancon有63人,DichGiao有52人,在对照区河内有46名妇女,还进行了实验室检查。
About 15% of Vietnamese are at risk of endemic goitre. In order to find out the local causes of goiter, Vancon, a low-lying area where we had goiter in the past decade, investigated 935 people and investigated 619 people in Dich Giao, a plateau area where goiter was prevailed and controlled by iodized salt. Cassava that causes goitre in Dich Giao accounts for half of the calories it consumes. The prevalence of goitre is 45% at Vancon and 28% at Dich Giao. 63 were in Vancon, 52 were in DichGiao, 46 were women in Hanoi in the control area and a laboratory test was also conducted.