2) Appleby BS, Roy P, Valenti A, Lee HB : Diagnosis and treatment of depression in Alzheimer's disease ; Impact on mood and cognition. Panminerva Med, 49 : 139-149 (2007).
3) Beekman AT, Deeg DJ, van Tilburg T, Smit JH, et al.: Major and minor depression in later life ; A study of prevalence and risk factors. J Affect Dis-ord, 36 : 65-75 (1995).
4) Benbow SM : The role of electroconvulsive thera-py in the treatment of depressive illness in old age. Br J Psychiatry, 155 : 147-152 (1989).
5) Bonner D, Howard R : Treatment-resistant de pression in the elderly. Int Psychogeriatr, 7〔Sup-pl.〕 : 83-94 (1995).