TY - JOUR TI - Venous Measurements as Predictors of Long-Term Fontan Complications: A Single-Center Echocardiographic Study AU - Ay, O. AU - Ergin, F. AU - Beyter, M.B. AU - Kayan Kasikci, G. AU - Yardimci, B.S. AU - Dogan, E. AU - Tuncer, N.O. AU - Atay, Y. AU - Levent, R.E. AU - Ulger, Z. JO - Journal of Clinical Practice and Research PY - 2026 VL - 48 SP - 128 EP - 136 DO - 10.14744/cpr.2026.93073 ER -