Perhaps you should try some spelling variations:
risk decreased » risk decreases (Expand search), is decreased (Expand search), cross decreased (Expand search)
decrease risk » decreased risk (Expand search), increase risk (Expand search), decrease in (Expand search)
decreased to » decreased the (Expand search), decreased tgf (Expand search), decreased in (Expand search)
decrease at » decrease akt (Expand search), decrease and (Expand search), decrease in (Expand search)
at decrease » rate decrease (Expand search), that decrease (Expand search), and decrease (Expand search)
decrease 42 » decrease in (Expand search), decrease of (Expand search), decrease _ (Expand search)
42 mapped » 3 mapped (Expand search), _ mapped (Expand search)

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: "(( decrease risk decreased to decrease ) OR ( decrease at decrease 42 mapped ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease risk decreased to decrease ) OR ( decrease at decrease 42 mapped ))*.