Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author="Kok, Gemma D." or (type any "bookEditor issueEditor" and editor="Kok, Gemma D.") Add to list Journal Article A1 open access Non-fatal disease burden for subtypes of depressive disorder: population-based epidemiological study Karolien E.M. Biesheuvel-Leliefeld, Gemma D. Kok, Claudi Bockting (UGent) , Ron de Graaf, Margreet ten Have, Henriette E. van der Horst, Anneke van Schaik, Harm W.J. van Marwijk and Filip Smit (2016) BMC PSYCHIATRY. 16(1). Add to list Journal Article A1 open access Double trouble : does co-morbid chronic somatic illness increase risk for recurrence in depression? A systematic review Gemma D. Kok, Claudi Bockting (UGent) , Huibert Burger, Wiebke Hannig, Gerdina H. M. Pijnenborg, Pim Cuijpers and Steven D. Hollon (2013) PLOS ONE. 8(3).