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