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: "\ ((((\\ practice guidebook to biostatistics AND epidemiology.\\ ) OR (\\ practical guidebook to biostatistical AND epidemiology.\\ ))) OR (((\\ practical guide to statistics AND epidemiology.\\ ) OR (\\ practical guide to statistical AND epidemiology.\\ ))))~\".
• Adding a wildcard symbol may retrieve word variants: \ ((((\\ practice guidebook to biostatistics AND epidemiology.\\ ) OR (\\ practical guidebook to biostatistical AND epidemiology.\\ ))) OR (((\\ practical guide to statistics AND epidemiology.\\ ) OR (\\ practical guide to statistical AND epidemiology.\\ ))))~\*.