@article{84f89eb40f9345f3a7bfba1927f0ac68,
title = "External validation of clinical prediction models using big datasets from e-health records or IPD meta-analysis: opportunities and challenges",
author = "Riley, \{Richard D\} and Joie Ensor and Snell, \{Kym I E\} and Debray, \{Thomas P A\} and Altman, \{Doug G\} and Moons, \{Karel G M\} and Collins, \{Gary S\}",
year = "2016",
doi = "10.1136/bmj.i3140",
language = "English",
volume = "353",
pages = "i3140",
journal = "BMJ - Clinical research",
issn = "1756-1833",
publisher = "BMJ Publishing Group",
}