研究单位：[1]The First Affiliated Hospital of Guangzhou Medical University[2]Nanfang Hospital of Southern Medical University[3]Guangdong Provincial Hospital of Traditional Chinese Medicine[4]Huizhou The Third People's Hospital[5]Tongji Hospital[6]Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine[7]Ruijin Hospital[8]First Hospital of China Medical University[9]The First Affiliated Hospital of Shanxi Medical University[10]Henan Provincial People's Hospital[11]The Second Hospital of Hebei Medical University[12]West China Hospital[13]The First People's Hospital of Yunnan[14]Inner Mongolia People's Hospital[15]Second Hospital of Jilin University
研究目的：
To investigate and compare the value of FeNO, blood Eos, serum TIgE in predicting the airway eosinophilic inflammationin chronic cough, asthma and COPD.
