Relationship between sclerostin and cardiovascular calcification in hemodialysis patients: A cross-sectional study - Brandenburg, V M; Kramann, R; Koos, R; Kruger, R; Schurgers, L; Muhlenbruch, G; Hubner, S; Gladziwa, U; Drechsler, Ch; Ketteler, M (BMC Nephrology, 2013)