Kuloglu, O., Bayram, N. A., Erten, Şükran, Durmaz, T., Keles, T., Sari, C., Akcay, M. and Bozkurt, E. (2012) “Assessment of left ventricular function by tissue Doppler imaging in patients with ankylosing spondylitis”, Rheumatology Reports, 4(1), p. e6. doi: 10.4081/rr.2012.e6.