Left Atrial Function in Pediatric Cardiomyopathies: A Multicenter Study. - Sabatino J; Avesani M; Moscatelli S; Castaldi B; Cattapan I; Sirico D; De Rosa S; De Sarro R; Bautista C; Fraisse A; Krupickova S; Daubeney PEF; et al. (Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography, 2026)