Kordeva S, Okulmus B, Tchernev Jr KG, Tchernev G. Dermatosurgical pearls: Ying-Yang flap for reconstruction of a circular defect in the presternal region. MR. 2026;62(4):71-72. Accessed June 19, 2026. https://journals.mu-sofia.bg/index.php/mr/article/view/927