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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) OR (statistical OR statistical))) AND epidemiology.\\\\\\") 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) OR (statistical OR statistical))) AND epidemiology.\\\\ ) OR (\\\ practical guide to statistics AND epidemiology.\\\\ ))\\\ \\ \.