Optimal search strategy for clinical trials in the Latin American and Caribbean Health Science Literature database (LILACS database): update
Sao Paulo Medical Journal (1999) - Comments
pubmed: 10511734  issn: 1516-3180  doi: 10.1590/s1516-31801999000300011 

Aldemar Araujo Castro, Otávio Augusto Câmara Clark, Álvaro Nagib Atallah