Author M. Ozawa P. Brennan K. Zienius K. Kurian W. Hollingworth D. Weller R. Grant W. Hamilton Y. Ben-Shlomo Year of Publication 2019 DOI 10.1136/bmjopen-2019-029686 DOIGoogle ScholarBibTeXEndNote X3 XMLEndNote 7 XMLEndnote taggedMarcRIS