Talvez deva tentar algumas variações de ortografia:
decrease risk » decreased risk (Expandir a busca), increase risk (Expandir a busca), decrease in (Expandir a busca)
risk decrease » risk decreases (Expandir a busca), risk increase (Expandir a busca), break decrease (Expandir a busca)
decrease from » decrease food (Expandir a busca), decrease of (Expandir a busca), decrease treg (Expandir a busca)
decreased to » decreased the (Expandir a busca), decreased tgf (Expandir a busca), decreased in (Expandir a busca)
from objects » from subjects (Expandir a busca), art objects (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease OR decreased to decrease ) OR ( decrease risk decrease from objects ))~.