Electrophysiological Changes in Children with Isolated Persistent Left Superior Vena Cava: A Case–Control Study - Sule Arici; Ozlem Surekli Karakus; Gulperi Yagar Keskin; Erkan Tas; Fatih Alparslan Genc; Sezin Bayraktar; Metin Sungur; Ayse Inci Yildirim (Journal of Clinical Medicine, 2026)