?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Brunner%2C+EJ&rft.aufirst=EJ&rft.aulast=Brunner&rft.issn=2468-2667&rft.date=July+2018&rft.issue=7&rft.atitle=Midlife+contributors+to+socioeconomic+differences+in+frailty+during+later+life%3A+a+prospective+cohort+study&rft.title=The+Lancet+Public+Health&rft.volume=3&rft.pages=e313-e322&rft.genre=article