Adele's "25" made music sales history, earned a milestone debut on the Billboard 200 chart, and instantly became the year's top selling album in the U.S. in just one week (with 3.38 million sold!)… By ...

Doctors use the 25-hydroxy vitamin D test to monitor your vitamin D levels. Low levels can mean you need to spend more time outdoors or adjust your diet. But it can also occur with certain medical ...

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