Talvez deva tentar algumas variações de ortografia:
increased signal » increased spinal (Expandir a busca), increased airway (Expandir a busca), increased atrial (Expandir a busca)
decrease ratio » decreased ratio (Expandir a busca), decrease at (Expandir a busca), decreased rate (Expandir a busca)
ratio decrease » rate decrease (Expandir a busca), rapid decrease (Expandir a busca), ratio increase (Expandir a busca)
and increased » and increases (Expandir a busca)
decrease and » decreases and (Expandir a busca), decrease of (Expandir a busca), decrease the (Expandir a busca)
in decrease » in decreased (Expandir a busca), on decrease (Expandir a busca), pain decrease (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease and increased signal processing ) OR ( decrease in decrease ratio decrease ))~.