Comparative Study

Comparison of clinical features between non-smokers with COPD and smokers with COPD: a retrospective observational study.

Int J Chron Obstruct Pulmon Dis. 2014 Jan 1;9:57-63.
Article

Microalbuminuria in Subjects With COPD: Relationship to the New Version of Global Initiative for Chronic Obstructive Lung Disease Staging.

Respir Care. 2017 Mar 1; 62 (3): 307-314.
Comparative Study

Microalbuminuria in Patients with Obstructive Sleep Apnea-Chronic Obstructive Pulmonary Disease Overlap Syndrome.

Ann Am Thorac Soc. 2016 Jun 1; 13 (6): 917-25.