@article{ref1,
title="Slum upgrading review: methodological challenges that arise in systematic reviews of complex interventions",
journal="Journal of public health (Oxford)",
year="2013",
author="Turley, Ruth and Saith, Ruhi and Bhan, Nandita and Doyle, Jodie and Jones, Kirsty and Waters, Elizabeth",
volume="35",
number="1",
pages="171-175",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="1741-3842",
doi="10.1093/pubmed/fdt008",
url="http://dx.doi.org/10.1093/pubmed/fdt008"
}