Slower Progress of Aortic Valve Calcification With Vitamin K Supplementation: Results From a Prospective Interventional Proof-of-Concept Study. Issue 21 (23rd May 2017) - Brandenburg, Vincent M.; Reinartz, Sebastian; Kaesler, Nadine; Krüger, Thilo; Dirrichs, Tim; Kramann, Rafael; Peeters, Frederique; Floege, Jürgen; Keszei, Andras; Marx, Nikolaus; Schurgers, Leon J.; Koos, Ralf