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Groeneveld, Iris F., Karin I. Proper, Allard J. van der Beek, Cor van Duivenbooden, och Willem van Mechelen. Design of a RCT Evaluating the (cost-) Effectiveness of a Lifestyle Intervention for Male Construction Workers At Risk for Cardiovascular Disease: The Health Under Construction Study. BioMed Central, 2008.

Groeneveld, Iris F., et al. Design of a RCT Evaluating the (cost-) Effectiveness of a Lifestyle Intervention for Male Construction Workers At Risk for Cardiovascular Disease: The Health Under Construction Study. BioMed Central, 2008.