44
Participants
Start Date
January 1, 2023
Primary Completion Date
July 1, 2023
Study Completion Date
September 1, 2024
compound ipratropium bromide solution (3mg salbutamol and 500μg ipratropium, Boehringer Ingelheim Limited, Germany)
inhaled compound ipratropium bromide solution (3mg salbutamol and 500μg ipratropium, Boehringer Ingelheim Limited, Germany)
1State Key Laboratory of Respiratory Disease, National clinical research center for respiratory disease, Guangzhou Institute of respiratory health. 2The First Affiliated Hospital of Guangzhou Medical University, Guangzhou
The First Affiliated Hospital of Guangzhou Medical University
OTHER