The second author’s name is spelled incorrectly. The correct name is: Saidulu Mattapally. The correct citation is: LaBarge W, Mattapally S, Kannappan R, Fast VG, Pretorius D, Berry JL, et al. (2019) Maturation of three-dimensional, hiPSC-derived cardiomyocyte spheroids utilizing cyclic, uniaxial stretch and electrical stimulation. PLoS ONE 14(7): e0219442. https://doi.org/10.1371/journal.pone.0219442