Results All patients were accompanied with respiratory tracts' symptoms in various degrees. Blood tinged sputum was found in 14 patients.
结果均有不同程度的呼吸道症状，有14例痰中带血丝。
Results All patients were accompanied with respiratory tracts' symptoms in various degrees. Blood tinged sputum was found in 14 patients.
结果均有不同程度的呼吸道症状，有14例痰中带血丝。
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