Gorgels Wim, Oude Voshaar Richard, Mol Audrey, van de Lisdonk Eloy, van den Hoogen Henk, van Balkom Anton, Breteler Marinus, Zitman Frans
Department Primary Care, Centre of Evidence Based Medicine (EBP), Radboud University Nijmegen Medical Centre, the Netherlands.
Eur J Gen Pract. 2008;14(1):37-9. doi: 10.1080/13814780701855666.