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