Preoperative fibrinogen before the repair of type A aortic dissection: Are the results too good to be true?: Editorial comment on: Li J, Wu Q, Tang M, Shen Y, Qiu Z, Chen X, Chen X, Chen L. Preoperative clinical application of human fibrinogen in patients with acute Stanford type A aortic dissection: A single-center retrospective study. Journal of Cardiac Surgery. In press.