@unpublished{Banks2007,
author = {James Banks and Michael Marmot and Zoë Oldfield and James Smith},
title = {The SES health gradient on both sides of the Atlantic},
year = {2007},
month = {Jan},
volume = {pp.},
doi = {10.1920/wp.ifs.2007.0704},
issn = {1742-0415},
url = {http://www.ifs.org.uk/wps/wp0704.pdf},
}