Exemplo de filtro de pesquisa realizada na base Medline via PUBMED

#7 Search (#2) AND (#6) Limits: Humans, Review 15:48:58 166
#6 Search (Arthritis, Rheumatoid ) AND (specificity[Title/Abstract]) Limits: Humans, Review 15:47:45 240
#5 Search (Arthritis, Rheumatoid ) AND (specificity[Title/Abstract]) Limits: Humans, Review, English 15:47:31 187
#2 Search "Arthritis, Rheumatoid"[Mesh] 14:56:15 82967