title: Importance of timing and duration of phototherapy.
authors: J W
authors: JW
authors: Stewart
mesh_terms: D003866:Depressive Disorder / Q000209:etiology / Q000523:psychology / Q000628:therapy*; D006801:Humans; D010789:Phototherapy / Q000379:methods*; D011569:Psychiatric Status Rating Scales; D012621:Seasons