Frans Dekker*, Arie Knuistingh Neven, Boukje Andriesse, David Kernick, Ria Reis, Michel D Ferrari and Willem JJ Assendelft
* Corresponding author: Frans Dekker f.dekker@lumc.nl
BMC Family Practice 2012, 13:13 doi:10.1186/1471-2296-13-13
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