Long-term prognostic value of 13N-ammonia myocardial perfusion positron emission tomography added value of coronary flow reserve. - Herzog BA; Husmann L; Valenta I; Gaemperli O; Siegrist PT; Tay FM; Burkhard N; Wyss CA; Kaufmann PA; Herzog, Bernhard A; Husmann, Lars; Valenta, Ines; et al. (Journal of the American College of Cardiology (JACC), 2009)