Exemplo de filtro de pesquisa realizada na base Medline via PUBMED

#4
Search Vaccine AND (full text[sb] AND (Humans[Mesh]) AND (Randomized Controlled Trial[ptyp]) AND (adolescent[MeSH]))
21:18:30
758
#3
Search Vaccine Limits: only items with links to full text, Humans, Randomized Controlled Trial, Adolescent: 13-18 years
21:18:01
758
#2
Search Vaccine