卡介菌多糖核酸注射液治疗长期卧床老年患者反复呼吸道感染效果观察
잡개균다당핵산주사액치료장기와상노년환자반복호흡도감염효과관찰
Effect of repeated respiratory tract infection of BCG polysaccharide and nucleic acid injection in treatment of long-term bedridden elderly patients
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