APA (7th ed.) Citation

DA, v. d. S., J, H., IH, L., & HM, K. (2014). Athlete's syndrome X. International journal of cardiology, 177(2), e49. https://doi.org/10.1016/j.ijcard.2014.09.081

Chicago Style (17th ed.) Citation

DA, van de Sande, Hoogsteen J, Liem IH, and Kemps HM. "Athlete's Syndrome X." International Journal of Cardiology 177, no. 2 (2014): e49. https://doi.org/10.1016/j.ijcard.2014.09.081.

MLA (9th ed.) Citation

DA, van de Sande, et al. "Athlete's Syndrome X." International Journal of Cardiology, vol. 177, no. 2, 2014, p. e49, https://doi.org/10.1016/j.ijcard.2014.09.081.