Belavý, Daniel L., Natalie Baecker, Gabriele Armbrecht, Gisela Beller, Judith Bühlmeier, Petra Frings-Meuthen, Jörn Rittweger, Heinz J. Roth, Martina Heer, and Dieter Felsenberg. “Serum Sclerostin and DKK1 in Relation to Exercise against Bone Loss in Experimental Bed Rest.”https://doi.org/10.1007/s00774-015-0681-3__Journal of Bone and Mineral Metabolism 34, no. 3 (2015): 354–65.https://doi.org/10.1007/s00774-015-0681-3 .