D, S., AK, S., WC, F., AA, B., & F, R. (1997). St. Jude Medical cardiac valves in small aortic roots: Follow-up to sixteen years. The Journal of thoracic and cardiovascular surgery, 113(3), 499. https://doi.org/10.1016/S0022-5223(97)70362-3
Chicago Style (17th ed.) CitationD, Sawant, Singh AK, Feng WC, Bert AA, and Rotenberg F. "St. Jude Medical Cardiac Valves in Small Aortic Roots: Follow-up to Sixteen Years." The Journal of Thoracic and Cardiovascular Surgery 113, no. 3 (1997): 499. https://doi.org/10.1016/S0022-5223(97)70362-3.
MLA (9th ed.) CitationD, Sawant, et al. "St. Jude Medical Cardiac Valves in Small Aortic Roots: Follow-up to Sixteen Years." The Journal of Thoracic and Cardiovascular Surgery, vol. 113, no. 3, 1997, p. 499, https://doi.org/10.1016/S0022-5223(97)70362-3.