@article{Kox2019, author = "René J. Kox and Jan L. Hoving and Jos H. Verbeek and Maria J. E. Schouten and Carel T. J. Hulshof and Haije Wind and Monique H. W. Frings-Dresen", title = "{Themes and (sub)categories.}", year = "2019", month = "2", url = "https://plos.figshare.com/articles/dataset/Themes_and_sub_categories_/7697759", doi = "10.1371/journal.pone.0212276.t001" }