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