The following materials on this page curates a high-quality collection of resources, including original scientific papers (especially landmark papers), textbooks, guidelines, and educational videos, relevant to residents and medical doctors pursuing specialization in cardiothoracic surgery. The material is both in English and Danish. Emphasis is placed on resources that support both day-to-day clinical practice and long-term professional development within a demanding and rapidly advancing field. The goal is to provide a structured overview of materials for lifelong learning and professional excellence within the field.