Guan et al. (2020) Guan Guan J J Wang Wang P P Lu Lu L L Zhao Zhao G G Association of plasma transferrin with cognitive decline in patients with mild cognitive impairment and Alzheimer’s disease Association of plasma transferrin with cognitive decline in patients with mild cognitive impairment and Alzheimer’s disease Frontiers in Aging Neuroscience Frontiers in Aging Neuroscience 2020 2020 12 12 38 38 10.3389/fnagi.2020.00038 10.3389/fnagi.2020.00038 32226377 32226377. Here, TF is linked to Alzheimer disease.