Orchard, J., Semsarian, C., Orchard, J., Freedman, B., & Neubeck, L. (2013). The AliveCor handheld heart monitor: turning your iPhone into a single-lead electrocardiogram (ECG). Journal of Science and Medicine in Sport, 16(1), e61. https://doi.org/10.1016/j.jsams.2013.10.144