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