Association between neuromelanin-sensitive MRI signal and psychomotor slowing in late-life depression

see also: https://www.thetransmitter.org/retraction/flawed-protocol-for-levodopa-clinical-trial-brings-retractions/; Bret R. Rutherford has ORI finding of misconduct, see: https://ori.hhs.gov/content/case-summary-rutherford-bret;