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The familiar sounds of your heart are made by the heart's valves as they open and close.
Women are 50% to 75% more likely than men to experience an adverse drug reaction.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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