title: Reply.
authors.affiliation: Department of Pediatrics and Child Health, Neonatal Intensive Care Unit, Wilton, Cork, Ireland; Irish Center for Fetal and Neonatal Translational Research (INFANT), University College Cork, Cork, Ireland.
authors.forename: Eugene Michael
authors.initials: EM
authors.lastname: Dempsey
authors.affiliation: Department of Pediatrics and Child Health, Neonatal Intensive Care Unit, Wilton, Cork, Ireland; Irish Center for Fetal and Neonatal Translational Research (INFANT), University College Cork, Cork, Ireland.
authors.forename: Geraldine B
authors.initials: GB
authors.lastname: Boylan
authors.affiliation: Department of Pediatrics and Child Health, Neonatal Intensive Care Unit, Wilton, Cork, Ireland; Irish Center for Fetal and Neonatal Translational Research (INFANT), University College Cork, Cork, Ireland.
authors.forename: C Anthony
authors.initials: CA
authors.lastname: Ryan
keywords: Cerebral autoregulation; cerebral blood volume; oxygen delivery; regional cerebral oxygenation (rcSO2); transition period