@article{281fadb8df134291a5f618fd3787565d,
title = "Levels of evidence: Intellectual aid or absolute judgement?",
author = "\{De Vet\}, \{Henrica C.W.\} and \{Van Tulder\}, \{Maurits W.\} and Bouter, \{Lex M.\} and Ferreira, \{Paulo H.\} and Ferreira, \{Manuela L.\} and Maher, \{Christopher G.\} and Kathryn Refshauge and Robert Herbert and Jane Latimer",
year = "2003",
month = sep,
day = "1",
doi = "10.1016/S0895-4356(03)00196-3",
language = "English",
volume = "56",
pages = "917--918",
journal = "Journal of clinical epidemiology",
issn = "0895-4356",
publisher = "Elsevier USA",
number = "9",
}