Yoga N Velupillai
, Chris J Packard
, G David Batty
, Vladimir Bezlyak
, Harry Burns
, Jonathan Cavanagh
, Kevin Deans
, Ian Ford
, Agnes McGinty
, Keith Millar
, Naveed Sattar
, Paul Shiels
and Carol Tannahill 
BMC Public Health 2008,
8:126doi:10.1186/1471-2458-8-126