Davis KL, Wei W, Meyers JL, Kilpatrick BS, Pandya N. Association between different hemoglobin a1c levels and clinical outcomes among elderly nursing home residents with type 2 diabetes mellitus. J Am Med Dir Assoc. 2014 Oct;15(10):757-962. doi: 10.1016/j.jamda.2014.06.007
Anderson IM, Jones S, Twiss J. Do negative cognitive style and personality predict depression symptoms and functional outcomes in severe bipolar and unipolar disorders? Int J Cogn Ther. 2009 Dec 15;2(4):343-53. doi: 10.1521/ijct.2009.2.4.343