Tompkins, Robert B, Vaughn Harris, Clayton Brown, and David E Griffith. 2014. “Diagnosing Pulmonary Embolism in Patients With Suspected or Established Chronic Lung Disease”. The Southwest Respiratory and Critical Care Chronicles 2 (8), 5-16. https://pulmonarychronicles.com/index.php/pulmonarychronicles/article/view/172.