Would be: Both would be similar.
Answered 11/30/2016
5k views
Both, but: Both have similar effects and wavelengths of light that can be useful. However, it's a bit more difficult to control the harmful effects and 'dose' of sunlight. Also, if you have a week of rainy days, you interrupt your therapy. While one or two days without treatment may not be a big deal, the best way to treat is a consistent schedule, which would be available with phototherapy.
Answered 7/29/2013
5k views
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