Ietje Perfors

48 Chapter 3 Strengths and Limitations of this study • This is the first review that systematically reviews evidence based interventions, aiming at general practitioner involvement during the curative treatment phase of the cancer care continuum. • The electronic database search was performed without restriction on languages and period. • We evaluate the studies with the Effective Practice and Organisation of Care Group risk of bias tool, which is the most appropriate tool to assess bias for complex interventions. • The title/abstract screening is done by single reviewer, two authors screened the full-text and the search was complemented with reference checks of relevant articles. • The included studies are heterogeneous in intervention and outcome and therefore strong conclusions could not be made.