Participants
Participants were recruited from the Banner Sun Health Research Institute (BSHRI) from September 2017 to May 2018. Eligible participants from the BSHRI cohort were vetted by the clinic director (KO) to assure eligibility for participation. Then they received a pre-clinic phone call or an in-clinic opportunity to discuss the study and enrollment process. Written informed consent according to the principles expressed in the Declaration of Helsinki24 was then obtained from eligible subjects before participation. The study was approved by the University of Arizona Institutional Review Board. Participants were selected and stratified into three categories of cognitive status including cognitive normal (CN), MCI of the Alzheimer’s type, and early-stage AD. The clinical diagnosis of cognitive status happened within a time-window of six months prior to study measurements, based…