1. State Key laboratory of Quality Research in Chinese Medicine/Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Taipa, Macau SAR 999056, P.R. China
2. Respiratory Medicine Department, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
3. Respiratory Medicine Department, The Second Chinese Medicine Hospital of Sichuan Province, Chengdu, Sichuan 610031, P.R. China
4. Department of Respiratory Medicine, The Third People's Hospital of Chengdu/Affiliated Hospital of Southwest Jiaotong University, Chengdu, Sichuan 610000, P.R. China