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31321 Studies found for: standard AND United States

Terms and Synonyms Searched:

Terms Search Results* Entire Database**
Synonyms
standard 31,321 studies 72,382 studies
United States 31,320 studies 152,295 studies
U.S. 705 studies 3,654 studies
U S 1 studies 9 studies
States 31,192 studies 170,476 studies
stated 109 studies 1,155 studies
Territory 107 studies 1,330 studies
United 31,183 studies 166,782 studies

   
-- No studies found
* Number of studies in the search results containing the term or synonym
** Number of studies in the entire database containing the term or synonym