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• Removing quotes may allow a broader search: \ \\ \\\ \\\\ ((((\\\\\ ((practice guidebook) OR (practical guidebook)) to ((biostatistical OR ((biostatistics OR biostatistical) OR biostatistical)) OR ((biostatistical OR ((biostatistics OR biostatistical) OR biostatistical)) OR (biostatistical OR ((biostatistics OR biostatistical) OR biostatistical)))) AND epidemiology.\\\\\ ) OR (\\\\\ ((practice guidebook) OR (practical guidebook)) to ((biostatistical OR ((biostatistics OR biostatistical) OR biostatistical)) OR ((biostatistical OR ((biostatistics OR biostatistical) OR biostatistical)) OR (biostatistical OR ((biostatistics OR biostatistical) OR biostatistical)))) AND epidemiology.\\\\\ ))) OR (\\\\\ practice guide to statistical AND epidemiology.\\\\\ ))*\\\\ \\\ \\ \~.

Perhaps you should try some spelling variations:
"\ \\ \\\ \\\\ \\\\\ practice guidebook OR practical guidebook to biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistical OR biostatistics OR biostatistical OR biostatistical AND epidemiology.\\\\\ OR \\\\\ practice guidebook OR practical guidebook to biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistical OR biostatistics OR biostatistical OR biostatistical AND epidemiology.\\\\\ OR \\\\\ practice guide to statistical AND epidemiology.\\\\\ *\\\\ \\\ \\ \ » "\ \\ \\\ \\\\ \\\\\ practice guidebook OR practical guide to biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistical OR biostatistics OR biostatistical OR biostatistical AND epidemiology.\\\\\ OR \\\\\ practice guidebook OR practical guide to biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistical OR biostatistics OR biostatistical OR biostatistical AND epidemiology.\\\\\ OR \\\\\ practice guide to statistical AND epidemiology.\\\\\ *\\\\ \\\ \\ \ (Expand Search), "\ \\ \\\ \\\\ \\\\\ practical guidebook OR practical guidebook to biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistical OR biostatistics OR biostatistical OR biostatistical AND epidemiology.\\\\\ OR \\\\\ practical guidebook OR practical guidebook to biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistical OR biostatistics OR biostatistical OR biostatistical OR biostatistical OR biostatistics OR biostatistical OR biostatistical AND epidemiology.\\\\\ OR \\\\\ practical guide to statistical AND epidemiology.\\\\\ *\\\\ \\\ \\ \ (Expand Search)