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