1. Xu JM: Somatization and somatoform disorders. Zhongguo Xingwei Yixue Kexue. 2004, 13 (3): 359-
2. van Wingen GA, van Eijndhoven P, Tendolkar I, Buitelaar J, Verkes RJ, Fernández G: Neural basis of emotion recognition deficits in first-episode major depression. Psychol Med. 2010, 8: 1-9.
3. Fava M: Daytime sleepiness and insomnia as correlates of depression. J Clin Psychiatry. 2004, 65 (Suppl 16): S27-S32.
4. Wichniak A, Wierzbicka A: The effects of antidepressants on sleep in depressed patients with particular reference to trazodone in comparison to agomelatine, amitriptyline, doxepin, mianserine and mirtazapine. Pol Merkur Lekarski. 2011, 31 (181): 65-70.
5. Sunderajan P, Gaynes BN, Wisniewski SR, Miyahara S, Fava M, Akingbala F, DeVeaugh-Geiss J, Rush AJ, Trivedi MH: Insomnia in patients with depression: a STAR*D report. CNS Spectr. 2010, 15: 394-404.