title: Invited commentary.
authors.affiliation: Cardiothoracic Surgery, Emory University, Cardiothoracic Research Laboratory, Carlyle Fraser Heart Center, 550 Peachtree St, NE, Atlanta, GA 30308-2225, USA. jvinten@emory.edu
authors.forename: Jakob
authors.initials: J
authors.lastname: Vinten-Johansen