Early Maturation of Heart Rate Variability in Very Preterm Infants Depends on Neonatal Factors and Is Associated With Neurodevelopmental Risk. - Bonneau L; Flamant C; Esvan M; Roué JM; Favrais G; Gascoin G; Cabon S; Porée F; Carrault G; Pladys P (Acta paediatrica (Oslo, Norway : 1992), 2026)