Primary versus secondary source of data in observational studies and heterogeneity in meta-analyses of drug effects: A survey of major medical journals
- Prada-Ramallal, G.
- Roque, F.
- Herdeiro, M.T.
- Takkouche, B.
- Figueiras, A.
Revista:
BMC Medical Research Methodology
ISSN: 1471-2288
Ano de publicación: 2018
Volume: 18
Número: 1
Tipo: Revisión