Τρέχουσες Κλινικές Έρευνες των Η.Π.Α.

The administrative building of the National Institutes of Health is shown in Bethesda, Md., Monday, Aug. 17, 2009. (AP Photo/J. Scott Applewhite)

The administrative building of the National Institutes of Health is shown in Bethesda, Md., Monday, Aug. 17, 2009. (AP Photo/J. Scott Applewhite)

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