Brzezinski, M., Mertz, V., Clements, F. M., Glower, D. D., Puskas, F., Grichnik, K. P., & Swaminathan, M. (2006). Transesophageal echocardiography of the quadricuspid aortic valve. Anesth Analg, 103(6), 1414–1415. https://doi.org/10.1213/01.ane.0000243390.30837.5f

Brzezinski, Marek, Veronica Mertz, Fiona M. Clements, Donald D. Glower, Ferenc Puskas, Katherine P. Grichnik, and Madhav Swaminathan. “Transesophageal echocardiography of the quadricuspid aortic valve.” Anesth Analg 103, no. 6 (December 2006): 1414–15. https://doi.org/10.1213/01.ane.0000243390.30837.5f.

Brzezinski M, Mertz V, Clements FM, Glower DD, Puskas F, Grichnik KP, et al. Transesophageal echocardiography of the quadricuspid aortic valve. Anesth Analg. 2006 Dec;103(6):1414–5.

Brzezinski, Marek, et al. “Transesophageal echocardiography of the quadricuspid aortic valve.” Anesth Analg, vol. 103, no. 6, Dec. 2006, pp. 1414–15. Pubmed, doi:10.1213/01.ane.0000243390.30837.5f.

Brzezinski M, Mertz V, Clements FM, Glower DD, Puskas F, Grichnik KP, Swaminathan M. Transesophageal echocardiography of the quadricuspid aortic valve. Anesth Analg. 2006 Dec;103(6):1414–1415.