沙美特罗/丙酸氟替卡松联合噻托溴铵吸入治疗D组COPD稳定期的疗效观察
사미특라/병산불체잡송연합새탁추안흡입치료D조COPD은정기적료효관찰
Efficacy of salmeterol/fluticasone propionate and tiotropium in patients with stable stage of group D COPD
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