Chronotype and Improved Sleep Efficiency Independently Predict Depressive Symptom Reduction after Group Cognitive Behavioral Therapy for Insomnia.
Bei B, Ong JC, Rajaratnam SM, Manber R. Chronotype and Improved Sleep Efficiency Independently Predict Depressive Symptom Reduction after Group Cognitive Behavioral Therapy for Insomnia. J Clin Sleep Med. 2015 Sep 15; 11(9):1021-7.