UNADILLA, Neb. (News Channel Nebraska ) - There was no shadow at 7:33 a.m. Sunday when Unadilla Billie prognosticated from Main Street. A shadow would mean six more weeks of winter, but no shadow ...
A clinical trial is defined by NIH as a research study in which one or more human subjects are prospectively assigned to one or more interventions (which may include placebo or other control) to ...
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