Fischer A, Zimovetz E, Ling C, Esser D, Shoof N. Humanistic and cost burden of systemic sclerosis: a review of the literature. Autoimmun Rev. 2017 Nov;16(11):1147-54. doi: 10.1016/j.autrev.2017.09.010
Glück S, Russell C, O'Shaughnessy J, McKenna EF, Hu S, Odom D, Blum JL. Treatment effect of capecitabine and docetaxel or docetaxel alone by oestrogen receptor status in patients with metastatic breast cancer: results of an exploratory analysis. Breast. 2013 Dec;22(6):1087-93. doi: 10.1016/j.breast.2013.08.016.