Additional File 5.

Workshop 3 (photograph). A) The set-up used to demonstrate hand washing techniques. B) A participant's hands under the UV-lamp. Some fluorescent powder remained after he washed his hand as can be seen on the tips of his fingers.

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MercureGuides de rue working group et al. Harm Reduction Journal 2008 5:7   doi:10.1186/1477-7517-5-7