Background & Aims. Patients with recurrent bleeding from gastrointestinal vascular malformations are a challenge to treat. We investigated the long-term efficacy and safety of thalidomide for refractory bleeding from gastrointestinal vascular malformations in an open-label, randomized study.
China is Worldâs Largest Energy Consumer. World consumption of energy has increased 5.6 percent in 2010, according to BPâs Statistical Review of World Energy. This is the largest increase since 1973, which happened to be a memorable year in energy history.
1 Canada is a world leader in the production and use of energy from renewable resources. 2  Renewable energy sources currently provide about 16.9% of Canadaâs total primary energy supply. 3  Moving water is the most important renewable energy source in Canada, providing 59% of Canadaâs electricity generation.ith its large landmass and diversified geography, Canada has an abundance of renewable resources that can be used to produce energy. Canada is a world leader in the production and use of energy from renewable resources. Renewable energy resources currently provide 16.9% of Canadaâs total primary energy supply.