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 biostatistical) AND epidemiology.\\ ) OR (\\ practical guidebook to biostatistical AND epidemiology.\\ ))) OR (((\\ practice guide to statistical AND epidemiology.\\ ) OR (\\ practical guide to statistical AND epidemiology.\\ ))))~\*".