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Vattenfall in briefWe are one of Europe’s largest producers and retailers of electricity and heat.Fossil freedom Vattenfall is a European energy company with approximately 19,000 employees. For more than 100 years we have electrified industries, supplied energy to people's homes and modernised our...
The power calculation was based on study findings of the effectiveness of a web-based personalized feedback intervention on heavy alcohol use in male adults in the Netherlands [36]. As reported in our study protocol, 750 participants were needed to detect an increase in the percentage of partici...