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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.\ ))~.