Age-related normative changes in cerebral perfusion: Data from The Irish Longitudinal Study on Ageing (TILDA). - Caoilfhionn Ní Leidhin; Jason McMorrow; Daniel Carey; Louise Newman; Wilby Williamson; Andrew J. Fagan; Michael A. Chappell; Rose-Anne Kenny; James F. Meaney; Silvin P. Knight (NeuroImage, 2021)