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Executive Summary BackgroundThe American College of Cardiology Foundation (ACCF) and the American Heart Association (AHA) have jointly engaged in the development of clinical practice guidelines (CPGs) for nearly 3 decades, based on the shared vision of their responsibility to provide guidance to cardiovascular healthcare professionals and the patients they serve by translating the best available evidence into clinical practice.The ACCF/AHA Task Force on Practice Guidelines (Task Force) oversees and directs the CPG development process and methodology that have been the foundation of our documents and responsible for their widespread recognition. In brief, once a topic is selected for a new, revised, or updated CPG, selected organizations and professional societies with similar interests and expertise are invited to participate as partners or collaborators, with the overall ACCF/AHA policy of being inclusive and collaborative. Next, a guideline writing committee (GWC) chair is selected by the Task Force, and together with the chair, potential GWC members are identified, based on a detailed and specific relationship with industry and other entities (RWI) policy stating that the chair and the majority of GWC members must have no relevant RWI. Once formed, the GWC outlines the content of the document, performs a detailed and specific evidence acquisition and review, drafts recommendations with limited preliminary text, and attends a consensus conference with GWC members of related CPGs where recommendations are vetted and reconciled across existing guidelines. After the conference, the document is finalized. Every recommendation is voted on by each GWC member with appropriate recusal based on relevant RWI. The finished document then undergoes extensive peer review and response, and any recommendation that is changed is voted on again by each GWC member. The final document is reviewed, potentially revised and approved by the Task Force, and sent to the ACCF Board of Trustees, the AHA Science Advisory and Coordinating Committee, and partnering or collaborating organizations for final approval. After this very thorough and robust process, the CPG has essentially been vetted throughout the academic and clinical community and is jointly published in the Journal of the American College of Cardiology and Circulation. Once published, it serves as official policy of bot...