TSVAL for the TSPARMCD 'SDESIGN' is equal to a given study design.
If the studyDesignFilter is empty (null, na or empty string) - all
rows for the TSPARMCD 'SDESIGN' are returned."><meta property="og:image" content="https://phuse-org.github.io/sendigR/logo.png"></head><body>
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