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APA Citation
Vandvik, P. O., Otto, C. M., Siemieniuk, R. A., Bagur, R., Guyatt, G. H., Lytvyn, L., Whitlock, R., Vartdal, T., Brieger, D., Aertgeerts, B., Price, S., Foroutan, F., Shapiro, M., Mertz, R., & Spencer, F. A. (2016). transcatheter or surgical aortic valve replacement for patients with severe, symptomatic, aortic stenosis at low to intermediate surgical risk: a clinical practice guideline. BMJ, 354, . http://access.bl.uk/ark:/81055/vdc_100144726627.0x000021