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Techniques exist for estimating the magnitude and direction of potential biases introduced by a differentially misclassified confounder, based on sensitivity and specificity estimates from an internal validation sub-study or a range of plausible values derived from an external validation study such as this (see e.g
Yarrow is a key ingredient for the Potent Health Cure, Special Health Cure, and Special Miracle Tonic.
A thunderclap headache can be a warning sign of a life-threatening condition such as severely high blood pressure, bleeding in the brain, a breach in one of the arteries in the neck and viral or bacterial meningitis
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Most people know that cigarettes contain nicotine and tobacco, two substances that can have a big impact on your heart, lungs and overall health
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