Wu, J. ., Liu, C. ., Lee, S. ., Kuo, Y. ., & Hsieh, T. . (2018). Assessment of the charlson comorbidity index score, CHADS2 and CHA2DS2-VASc scores in predicting death in patients with thoracic empyema. Heart & Lung : The Journal of Critical Care. https://doi.org/10.1016/j.hrtlng.2017.12.003 (Original work published 2018)