Reference Ranges for Fetal Ventricular Global Longitudinal Strain (GLS) Using Bidimensional Speckle-Tracking Echocardiography: A Systematic Review - Danielle Bittencourt Sodré Barmpas; Maria de Fátima Monteiro Pereira Leite; Saint Clair Gomes Junior; Karla G. Camacho; Maria Virginia M. Peixoto; Heron Werner; Renato Augusto Moreira de Sá (Journal of Clinical Medicine, 2026)