?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Meulen%2C+D.T.+van+der&rft.aufirst=D.T.+van+der&rft.aulast=Meulen&rft.tpages=17&rft.title=Differences+in+Social+Isolation+Among+European+Elderly&rft.degree=Bachelor&rft.date=2024