V. Parienti

Changes in melatonin levels but not cortisol levels are associated with depression in patients with eating disorders.

S. Kennedy, G. Brown, P. Garfinkel, 1989, Archives of general psychiatry.

Sulphatoxy melatonin: An index of depression in anorexia nervosa and bulimia nervosa

S. Kennedy, P. Garfinkel, Gregory M. Brown, 1990, Psychiatry Research.