Talvez deva tentar algumas variações de ortografia:
decrease burden » disease burden (Expandir a busca), decrease further (Expandir a busca)
burden disease » bursal disease (Expandir a busca)
decrease rate » decreased rate (Expandir a busca), decreases rate (Expandir a busca), decrease at (Expandir a busca)
rate decrease » rats decreases (Expandir a busca), rate increase (Expandir a busca), to decrease (Expandir a busca)
disease care » disease case (Expandir a busca), disease carta (Expandir a busca), disease cases (Expandir a busca)
care process » change process (Expandir a busca)
decrease akt » decrease at (Expandir a busca), decrease and (Expandir a busca), decrease after (Expandir a busca)
akt decrease » and decrease (Expandir a busca), not decrease (Expandir a busca), any decrease (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease burden disease care process ) OR ( decrease rate decrease akt decrease ))~.