APA (7th ed.) Citation

FA, S., N, L., N, C., JL, D., P, G., & JL, M. (2014). Prevalence and clinical impact of QRS duration in patients with low-flow/low-gradient aortic stenosis due to left ventricular systolic dysfunction. European journal of heart failure, 16(6), 639. https://doi.org/10.1002/ejhf.63

Chicago Style (17th ed.) Citation

FA, Sebag, Lellouche N, Chaachoui N, Dubois-Rande JL, Gueret P, and Monin JL. "Prevalence and Clinical Impact of QRS Duration in Patients with Low-flow/low-gradient Aortic Stenosis Due to Left Ventricular Systolic Dysfunction." European Journal of Heart Failure 16, no. 6 (2014): 639. https://doi.org/10.1002/ejhf.63.

MLA (9th ed.) Citation

FA, Sebag, et al. "Prevalence and Clinical Impact of QRS Duration in Patients with Low-flow/low-gradient Aortic Stenosis Due to Left Ventricular Systolic Dysfunction." European Journal of Heart Failure, vol. 16, no. 6, 2014, p. 639, https://doi.org/10.1002/ejhf.63.