Author S. Pouwels A. de Boer M. Javaid D. Hilton-Jones J. Verschuuren C. Cooper H. Leufkens F. de Vries Year of Publication 2013 DOI 10.1007/s00198-012-1970-5 DOIGoogle ScholarBibTeXEndNote X3 XMLEndNote 7 XMLEndnote taggedMarcRIS