About the Authors

Way K. W. Lau

Affiliation Division of Respiratory Medicine, Department of Medicine, The University of Hong Kong, Hong Kong SAR, China

Moira M. W. Chan-Yeung

Affiliation Division of Respiratory Medicine, Department of Medicine, The University of Hong Kong, Hong Kong SAR, China

Benjamin H. K. Yip

Affiliation Department of Psychiatry, The University of Hong Kong, Hong Kong SAR, China

Amy H. K. Cheung

Affiliation Division of Respiratory Medicine, Department of Medicine, The University of Hong Kong, Hong Kong SAR, China

Mary S. M. Ip

Affiliation Division of Respiratory Medicine, Department of Medicine, The University of Hong Kong, Hong Kong SAR, China

Judith C. W. Mak

judithmak@hku.hk

Affiliations Division of Respiratory Medicine, Department of Medicine, The University of Hong Kong, Hong Kong SAR, China, Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong SAR, China

and the COPD Study Group of the Hong Kong Thoracic Society

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JM WL. Performed the experiments: WL AC. Analyzed the data: WL BY. Contributed reagents/materials/analysis tools: JM MI MC. Wrote the paper: WL MC BY JM.