Effectiveness of cognitive behavioural therapy augmentation in major depression treatment (ECAM study): study protocol for a randomised clinical trial.

Nakagawa A, Sado M, Mitsuda D, Fujisawa D, Kikuchi T, Abe T, Sato Y, Iwashita S, Mimura M, Ono Y.
BMJ Open. 2014 Oct 21;4(10):e006359. doi: 10.1136/bmjopen-2014-006359.