zlacker

>>ivank+(OP)
A recent Cochrane review found very little high quality evidence in either direction:

http://www.cochrane.org/CD011269/DEPRESSN_light-therapy-prev...

It's not clear to me why light therapy is considered as a well-researched treatment.

>>sambe+Ad1
About systematic reviews and Cochrane : do they manage do see if there's a reasonable effect on a small group of people ? doesn't it get lost in the statistical analysis ?