Chronic obstructive pulmonary disease as a cardiovascular risk factor: results of a case-control study (CONSISTE study)

Michael FalolaDepartment of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, USAI read with interest the article "Chronic obstructive pulmonary disease as a cardiovascular risk factor. Results of a case-control study (CONSISTE study)" by de Lucas-Ramos et al.1 In my opinion, the study did not use case-control design, despite its title.View original paper by de Lucas-Ramos and colleagues.