Tschopp, Jonathan, Philippe Dumont, and Daniel Hayoz. “True Prevalence of COPD and Its Association With Peripheral Arterial Disease in the Internal Medicine Ward of a Tertiary Care Hospital”. Swiss Medical Weekly 147, no. 2728 (July 13, 2017): w14460. Accessed March 3, 2024. https://smw.ch/index.php/smw/article/view/2325.