?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Landy%2C+R&rft.aulast=Landy&rft.aufirst=R&rft.tpages=395&rft.title=The+influence+of+life+course+socioeconomic+position+on+cognitive+function+and+cognitive+decline+in+older+age%3A+the+impact+of+missing+data&rft.degree=Doctoral&rft.date=28+October+2012&rft.inst=UCL+(University+College+London)