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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.\\\\\\\\ ))\\\\\\\ \\\\\\ \\\\\ \\\\ \\\ \\ \.