Multicenter Study

Exacerbations and health care resource utilization in patients with airflow limitation diseases attending a primary care setting: the PUMA study.

Int J Chron Obstruct Pulmon Dis. 2016 Jan 1; 11: 3059-3067.
Comparative Study

Asthma-chronic obstructive pulmonary disease overlap syndrome in the urban Chinese population: prevalence and disease burden using the 2010, 2012, and 2013 China National Health and Wellness Surveys.

Int J Chron Obstruct Pulmon Dis. 2016 Jan 1; 11: 1139-50.
Article

Evaluation of psychological status in patients with asthma and COPD.

Iran J Allergy Asthma Immunol. 2012 Mar 1; 11 (1): 65-71.