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

• If you are trying to use Boolean operators, they must be ALL CAPS: \ ((\ practical guidebook to (biostatistics OR biostatistical) AND epidemiology.\\ ) OR (\ practical guide to statistical AND epidemiology.\\ ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "\ ((\ practical guidebook to (biostatistics OR biostatistical) and epidemiology.\\ ) OR (\ practical guide to statistical and epidemiology.\\ ))~".
• Adding a wildcard symbol may retrieve word variants: \ ((\ practical guidebook to (biostatistics OR biostatistical) and epidemiology.\\ ) OR (\ practical guide to statistical and epidemiology.\\ ))*.