Mariken Stegmann

Acknowledgements  The authors would like to thank the participating hospitals (Universitair Medisch Centrum  Groningen, Ommelander ZorgGroep, Treant Zorggroep, Martini Ziekenhuis, Wilhelmina  Ziekenhuis Assen, and Medisch Centrum Leeuwarden) and all participating GPs for their  efforts. They would like to thank Jan Schuling for his advice and support, and Vera  Bouwknegt, Mechteld Jansen, Eva Postma, Bren Hartjes, and especially Lisa Louer and Pim  Brandenbarg for their help with data collection. Finally, they thank Robert Sykes for  providing editorial services (www. doctored.org.uk ).  50 Chapter 4