@article{ref1,
title="Next-generation systematic reviews: prospective meta-analysis, individual-level data, networks and umbrella reviews",
journal="British journal of sports medicine",
year="2017",
author="Ioannidis, John",
volume="51",
number="20",
pages="1456-1458",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0306-3674",
doi="10.1136/bjsports-2017-097621",
url="http://dx.doi.org/10.1136/bjsports-2017-097621"
}