Doward LC, McKenna SP, Meads DM, Twiss J, Hagell P, Oprandi N. Psychometric and scaling properties of the patient reported outcome indices for multiple sclerosis (PRIMUS). Mult Scler. 2007 Jun;13(Suppl 2):S219.
Rubino A, Roskell NS, Tennis P, Mines D, Weich S, Andrews E. Risk of suicide during treatment with venlafaxine, citalopram, fluoxetine, and dothiepin: retrospective cohort study. BMJ. 2007 Feb 3;334(7587):242-5.