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• The words AND, OR and NOT may confuse the search; try adding quotes: "\"\\"((\\"practical guidebook to ((statistical OR statistical) OR ((statistical OR statistical) OR (statistical OR statistical))) and epidemiology.\\\") OR (\\"((practice guide) OR (practical guide)) to statistics and epidemiology.\\\"))\\"\"".
• Removing quotes may allow a broader search: (( practical guidebook to ((statistical OR statistical) OR ((statistical OR statistical) OR (statistical OR statistical))) and epidemiology.\ ) OR ( ((practice guide) OR (practical guide)) to statistics and epidemiology.\ )).