Does the duration of index episode affect the treatment outcome of major depressive disorder? A STAR*D report.
Gilmer WS, Gollan JK, Wisniewski SR, Howland RH, Trivedi MH, Miyahara S, Fleck J, Thase ME, Alpert JE, Nierenberg AA, et al. J Clin Psychiatry. 2008 Aug; 69(8):1246-56.