This occurs when a doctor, fearing a lawsuit, orders a battery of costly diagnostic tests to rule out the highly improbable, even when the obvious cause of sickness or injury is staring him in the face.

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Unlike its diagnostic counterpart, this brand of MRI can only operate within highly magnetic fields, thereby posing a threat to many electronic devices.

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Results suggested that after three months, the group using the fatty acid made "highly significant improvements" in 12 out of 13 behavioural scales, including three diagnostic ADHD features - inattention, hyperactivity and impulsivity.

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