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• Performing a fuzzy search may retrieve terms with similar spellings: \ ((((\ practical guidebook to ((statistical OR statistical) OR ((statistical OR statistical) OR (statistical OR statistical))) AND epidemiology.\\ ) OR (\ practical guidebook to ((statistical OR statistical) OR ((statistical OR statistical) OR (statistical OR statistical))) AND epidemiology.\\ ))) OR (\ practical guide to statistics AND epidemiology.\\ ))*\~.
• 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 (\ practical guidebook to ((statistical OR statistical) OR ((statistical OR statistical) OR (statistical OR statistical))) AND epidemiology.\\ ))) OR (\ practical guide to statistics AND epidemiology.\\ ))*\".
• Adding a wildcard symbol may retrieve word variants: \ ((((\ practical guidebook to ((statistical OR statistical) OR ((statistical OR statistical) OR (statistical OR statistical))) AND epidemiology.\\ ) OR (\ practical guidebook to ((statistical OR statistical) OR ((statistical OR statistical) OR (statistical OR statistical))) AND epidemiology.\\ ))) OR (\ practical guide to statistics AND epidemiology.\\ ))*\*.