Nov-12
AUTHORS : Gillian Hall, Epidemiology Ltd, Grimsdyke House, RavenscroftPark, London EN5 4ND, United Kingdom – Email: gillian.hall@gchall.com (gillian_hall@gchall.demon.co.uk (for this study))
JOURNAL : PLoS One
REFERENCE: 7(11):e49908
DOI : 10.1371/journal.pone.0049908