Allocentric and Egocentric Spatial Processing in Middle-Aged Adults at High Risk of Late-Onset Alzheimer's Disease: The PREVENT Dementia Study. Ritchie K, Carrière I, Howett D, Su L, Hornberger M, O'Brien JT, Ritchie CW, Chan D J Alzheimers Dis. 2018; 65(3):885-896. PMID: 30103333. Abstract Comment Bookmark Recommend Follow Comment | Bookmark | Recommend | Follow