%0 Journal Article %T Examining the construct and known-group validity of a composite endpoint for The Older Persons and Informal Caregivers Survey Minimum Data Set (TOPICS-MDS); A large-scale data sharing initiative %A Anton J. M. de Craen %A Bianca M. Buurman %A Cynthia S. Hofman %A Han Boter %A Jennifer E. Lutomski %A Marcel G. M. Olde Rikkert %A Peter Makai %A Ren¨¦ J. F. Melis %A Rogier Donders %A TOPICS-MDS research consortium %J Archive of "PLoS ONE". %D 2017 %R 10.1371/journal.pone.0173081 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5351849/