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此次长嶺县调查的结果,以前驱期的病人佔绝大多数,表明此地的病是新发生的,其原因有待深入探讨。同时,以X线照相作鑑别诊断,在此地区应该进行。
The results of the investigation in Changling County, the vast majority of patients in the prodromal period, indicating that the disease is new here, the reason remains to be explored in depth. At the same time, the differential diagnosis of radiography should be carried out in this area.