Cardiac alternans reduction by chaotic attractors in T ± ϵ feedback control Duy-Manh Le, Y. T. Lin, Y. H. Yang, Pik-Yin Lai and C. K. Chan EPL, 117 5 (2017) 50001 Published online: 24 April 2017 DOI: 10.1209/0295-5075/117/50001