IL6 and depressive disorder: Gimeno Gimeno D D Kivimäki Kivimäki M M Brunner Brunner EJ EJ Associations of C-reactive protein and interleukin-6 with cognitive symptoms of depression: 12-Year follow-up of the Whitehall II study Associations of C-reactive protein and interleukin-6 with cognitive symptoms of depression: 12-Year follow-up of the Whitehall II study Psychol Med Psychol Med 2009 2009 10.1017/S0033291708003723 10.1017/S0033291708003723 supplied-pmid 19719898?