Goel 2001.

Trial name or title	Bright light and negative ion treatment in patients with chronic depression.
Methods
Participants	Diagnosis: Major depressive disorder (DSM‐IV). Inclusion criteria: medically healthy. No other Axis I disorders. Multicenter (Wesleyan University, the New York State Psychiatric Institute).
Interventions	1. Bright light (10000 lux). N = 11. 2. Negative air ion exposure. N = 9. 3. Inactive treatment. N = unknown.
Outcomes	SIGH‐SAD.
Starting date	2001.
Contact information	Dr. N. Goel, Wesleyan University, Middletown, CT 06459, USA. E‐mail: ngoel@wesleyan.edu.
Notes	Allocation: randomized. Blindness: single‐blind. Duration: unknown. Supported by NIH Grant and a Wesleyan Project Grant.