Conclusion It is very important to think highly of early symptom in high-risk persons and examine them periodically,including sputum,iconographic examination or bronchoscopy in orde...

 
  • 结论对高危人群应重视早期症状,定期进行包括痰、影像学或纤维支气管镜检查对发现早期患者具有重要价值。
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