Bill and Melinda Gates Foundation issues $ 100,000 challenge . Not widely available ; goal is to create one that people will actually want to use . Use continues to grow in Europe and in U.S. minority communities . The startup grant could lead to $ 1 million in further funding . New design would not need extensive clinical testing , foundation says .
Bill and Melinda Gates Foundation issues $ 100,000 challenge . Not widely available ; goal is to create one that people will actually want to use . Use continues to grow in Europe and in U.S. minority communities . New design would not need extensive clinical testing , foundation says .