"Sitting close to the television may not make a child nearsighted, but a child may sit close to the television because he or she is nearsighted and undiagnosed," she reports.

在她的报告中，她说“看电视坐得离屏幕太近可能不会使小孩近视，但是小孩可能会因为近视所以才坐得离电视机近”。

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They don't think South Korea has more children with autism than the United States, but instead that autism often goes undiagnosed in many nations.

他们并未料到韩国自闭的孩子比美国还多，但其实在许多国家自闭症通常不会被诊断出来。

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But don't downplay it. Undiagnosed asthma can make life more difficult and could even be deadly.

但是，不要低估它，哮喘能够让人们的生活更加困难，甚至致命。

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But patients often go undiagnosed for months, spreading the disease to others.

WSJ: Plan to Fight Deadly TB Strain Advances in India

Van Gogh, Mr Gayford says, suffered from bi-polar disorder, a severe form of manic depression which can now be treated with lithium but which then was undiagnosed.

ECONOMIST: Van Gogh and Gauguin: Sunny side down | The

Obstructive sleep apnoea affects up to 4% of the population, but the majority of cases are undiagnosed.

BBC: Rural risk for sleep disorder Scots