You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "\ ((\\ practical guidebook to ((biostatistical OR biostatistics) OR (biostatistical OR biostatistics)) AND epidemiology.\\ ) OR (\\ ((practice guide) OR (practical guide)) to statistics AND epidemiology.\\ ))~".
• Adding a wildcard symbol may retrieve word variants: \ ((\\ practical guidebook to ((biostatistical OR biostatistics) OR (biostatistical OR biostatistics)) AND epidemiology.\\ ) OR (\\ ((practice guide) OR (practical guide)) to statistics AND epidemiology.\\ ))*.