Ali Yenigün, Case Western Reserve University – University Hospitals, Division Of Cardiac Surgery, August 1 - 31 2021 Burhan Öztürk, Loyola University Clinical Anesthesia Internship,April 1-26, 2019 Ali Yenigün, Indıana Unıversıty Health Hospıtal–Dıvısıon Of Transplant Surgery, July 12 - August 9 2019
