Comment on

• FIRST: Fractional Flow Reserve and Intravascular Ultrasound Relationship Study.

  Waksman R, Legutko J, Singh J, Orlando Q, Marso S, Schloss T, Tugaoen J, DeVries J, Palmer N, Haude M, Swymelar S, Torguson R. Waksman R, et al. J Am Coll Cardiol. 2013 Mar 5;61(9):917-23. doi: 10.1016/j.jacc.2012.12.012. Epub 2013 Jan 23. J Am Coll Cardiol. 2013. PMID: 23352786
• Superiority of fractional flow reserve versus intravascular ultrasound for intermediate coronary stenoses.

  De Caterina AR, Leone AM, Crea F. De Caterina AR, et al. J Am Coll Cardiol. 2013 Jul 9;62(2):164. doi: 10.1016/j.jacc.2013.02.086. Epub 2013 Apr 18. J Am Coll Cardiol. 2013. PMID: 23603701 No abstract available.