Study population
MCI
Individuals with MCI were collected from the “Hippocampus Study Clinical Trial”. The “Hippocampus Study” is a multicentre double-blind, randomized, placebo-controlled trial (Design and protocol of the Hippocampus Study Clinical Trial (The per-protocol population (The Hippocampus Study Clinical Trial was approved by the institutional review board from each of the participating research centres and by the Ethic Committee of the Coordination Centre at La Pitié-Salpetriere Hospital, Paris, France (Reference Number: E2020-E033-41, Ethic Committee Approval: November 8, 2006). The study was conducted in accordance with the Declaration of Helsinki and all individuals provided written consent.