Iron deposition and distribution across the hippocampus is associated with pattern separation and pattern completion in older adults at risk for Alzheimer's disease Jing Zhou, Alfie Wearn, Julia Huck, Colleen Hughes, Giulia Baracchini, Jennifer Tremblay-Mercier, Judes Poirier, Sylvia Villeneuve, Christine Lucas Tardif, M. Mallar Chakravarty, Ana M. Daugherty, Claudine J. Gauthier, Gary R. Turner, R.