75Informal Caregiving for Dementia Patients: The Contribution of Patient Age, Cognitive and Functional Impairment and Challenging Behaviours to Caregiver Burden. (17th September 2018) - Allen, Andrew P; Buckley, Maria; Chorcoráin, Aoife Ní; Cryan, John F; Dinan, Timothy G; Kearney, Patricia; Clarke, Gerard; William Molloy, D