Zheng, W., Wang, J., Xu, F., Zheng, J., Zhang, H., Ma, J., … Chen, Y. (2018). Evaluation and management of patients with acute chest pain in China (EMPACT): protocol for a prospective, multicentre registry study. BMJ Open, 8(1), e017872. https://doi.org/10.1136/bmjopen-2017-017872 (Original work published 2018)