TY - JOUR TI - The X-mark signature of pulmonary veins in an infant’s heart AU - Ayyıldız, P. AU - Tanıdır, Ä.C. AU - Öztürk, E. AU - GüzeltaÅŸ, A. JO - The Anatolian Journal of Cardiology PY - 2015 VL - 15 SP - 5030 EP - 5030 DO - 10.5152/AnatolJCardiol.2015.6707 ER -