APA (7th ed.) Citation

Al-Ruzzeh, S., Asimakopoulos, G., Ambler, G., Omar, R., Hasan, R., Fabri, B., . . . Amrani, M. (2003). Validation of four different risk stratification systems in patients undergoing off-pump coronary artery bypass surgery: A UK multicentre analysis of 2223 patients. Heart, 89(4), 432. https://doi.org/10.1136/heart.89.4.432

Chicago Style (17th ed.) Citation

Al-Ruzzeh, S., et al. "Validation of Four Different Risk Stratification Systems in Patients Undergoing Off-pump Coronary Artery Bypass Surgery: A UK Multicentre Analysis of 2223 Patients." Heart 89, no. 4 (2003): 432. https://doi.org/10.1136/heart.89.4.432.

MLA (9th ed.) Citation

Al-Ruzzeh, S., et al. "Validation of Four Different Risk Stratification Systems in Patients Undergoing Off-pump Coronary Artery Bypass Surgery: A UK Multicentre Analysis of 2223 Patients." Heart, vol. 89, no. 4, 2003, p. 432, https://doi.org/10.1136/heart.89.4.432.