1 State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China;; Firestone Institute for Respiratory Health, The Research Institute of St. Joe's Hamilton, St. Joseph's Healthcare; Department of Medicine, McMaster University, Hamilton, Canada.
2 State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China.
3 Firestone Institute for Respiratory Health, The Research Institute of St. Joe's Hamilton, St. Joseph's Healthcare; Department of Medicine, McMaster University, Hamilton, Canada.