P. Li et al. “Beta-Amyloid Deposition in Patients with Major Depressive Disorder with Differing Levels of Treatment Resistance: A Pilot Study,” EJNMMI Res. 7, № 1 (December 2017): 24; см. также S. Perin et al. “Amyloid Burden and Incident Depressive Symptoms in Preclinical Alzheimer’s Disease,” J. Affect. Disord. 229 (March 2018): 269–274.