Light Therapy. in Treatment of Psychiatric Disorders:
A Task Force Report of the American Psychiatric Association. 1989; Vol 3: 1890-1896
"In summary, phototherapy has been shown to be effective in SAD, where it is a viable clinical treatment and, in many cases, the treatment of choice."
Diagnosis and Treatment of Seasonal Affective Disorder.
JAMA December 8, 1993; 270(22):2717-2720