Tiotropium In Early Chronic Obstructive Pulmonary Disease Patients in China

Beijing Chao-Yang Hospital, Beijing

Shanghai Xuhui District Central Hospital, Shanghai

Zhongshan Hospital Fudan University, Shanghai

The Second People's Hospital of Hunan Province, Changsha

Chenzhou No.1 people's Hopital, Chenzhou

Tongji Hospital,Tongji Medical College of HUST, Wuhan

Henan Provincial People's Hospital, Zhengzhou

The First Affiliated Hospital of Sun Yat-sen University, Guangzhou

The First Affiliated Hospital of Guangzhou Medical College, Guangzhou

Liwan Hospital,Guangzhou Medical College, Guangzhou

The Third Affiliated Hospital of Guangzhou Medical College, Guangzhou

Guangdong No.2 Provincial People's Hospital, Guangzhou

The First Affiliated Hospital of Jinan University, Guangzhou

Guangzhou Panyu Center Hospital, Guangzhou

The First People's Hospital of Shaoguan, Shaoguan

Shaoguan Iron and Steel Group Company limited Hospital, Shaoguan

Huizhou First Hospital, Huizhou

Shenzhen Sixth People's Hospital, Shenzhen

The second people's Hospital,Zhanjiang, Zhanjiang

Affiliated Hospital of Guangdong Medical College, Zhanjiang

The First People's Hospital of Foshan, Foshan

The Affiliated Hospital of Guiyang Medical College, Guiyang

Guizhou People's Hospital, Guiyang

Xinqiao Hospital, Chongqing

Wengyuan County People's Hospital, Shaoguan