@article{cbd1d8c18433415e99d6907d9fc87779,
title = "Subgroup analyses in individual patient data meta-analyses require improvement",
author = "L. Koopman and \{Van der Heijden\}, \{G. J. M. G.\} and Glasziou, \{P. P.\} and Grobbee, \{D. E.\} and Rovers, \{M. M.\}",
year = "2006",
doi = "10.1007/s10654-006-9021-1",
language = "English",
volume = "21",
pages = "72--73",
journal = "European Journal of Epidemiology",
issn = "0393-2990",
publisher = "Springer Science and Business Media B.V.",
number = "1suppl",
}