Risk stratification for cardiac valve replacement. National Cardiac Surgery Database. Database Committee of The Society of Thoracic Surgeons.

MLA

Jamieson, W. R., et al. “Risk Stratification for Cardiac Valve Replacement. National Cardiac Surgery Database. Database Committee of The Society of Thoracic Surgeons.” The Annals of Thoracic Surgery, vol. 67, no. 4, Apr. 1999, pp. 943–51. EBSCOhost, https://doi.org/10.1016/s0003-4975(99)00175-7.

APA

Jamieson, W. R., Edwards, F. H., Schwartz, M., Bero, J. W., Clark, R. E., & Grover, F. L. (1999). Risk stratification for cardiac valve replacement. National Cardiac Surgery Database. Database Committee of The Society of Thoracic Surgeons. The Annals of Thoracic Surgery, 67(4), 943–951. https://doi.org/10.1016/s0003-4975(99)00175-7

Chicago

Jamieson, W R, F H Edwards, M Schwartz, J W Bero, R E Clark, and F L Grover. 1999. “Risk Stratification for Cardiac Valve Replacement. National Cardiac Surgery Database. Database Committee of The Society of Thoracic Surgeons.” The Annals of Thoracic Surgery 67 (4): 943–51. doi:10.1016/s0003-4975(99)00175-7.