Each Free Communication session consists of 6 abstract presentations of the highest-graded abstracts submitted to the CORA 2023 Congress. Each presenter has about 8 minutes to present their data followed by 2 minutes for Q&A and discussion with the session chairs and audience. The Free Communication sessions present a valuable opportunity for researchers to showcase their work and receive feedback from the international scientific community. The variety of topics and presenters’ backgrounds – from young investigators to renowned researchers in their fields, turn these sessions into great educational and networking opportunities.