European Reference Networks as core health structures where referring genetic newborn screening positive infants: an innovative operational research framework. - Fortunato F; Selvatici R; Kirschner J; Sansen S; Agolini E; Ottombrino S; Bertini E; Novelli A; Einhorn M; Matalonga L; Beltran S; Gut IG; et al. (Frontiers in public health, 2026)