Contributions Paul Sorajja, MD, FSCAI Transcatheter Edge-to-Edge Repair Ebook Paul Sorajja, MD, FSCAI SCAI Position Statement on Best Practices for Clinical Proctoring of New Technologies and Techniques Paul Sorajja, MD, FSCAI Transcatheter Aortic Valve Replacement in Patients With Severe Comorbidities: A Retrospective Cohort Study Paul Sorajja, MD, FSCAI SCAI/HFSA Clinical Expert Consensus Document on the Use of Invasive Hemodynamics for the Diagnosis and Management of Cardiovascular Disease Paul Sorajja, MD, FSCAI Optimal Use of Left Ventriculography at the Time of Cardiac Catheterization Paul Sorajja, MD, FSCAI Ad Hoc Percutaneous Coronary Intervention