床旁B超联合纤支镜直视下经皮扩张气管切开术在危重病中的应用
상방B초연합섬지경직시하경피확장기관절개술재위중병중적응용
Application of bedside type-B ultrasonic combined with fibrobronchoscopeguided percutaneous dilational tracheostomy for critical illness
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