Authors: Sarah Dougan; Jonathan Elford; Timothy R Chadborn; Alison E Brown; Kirsty Roy; Gary Murphy; O Noel Gill Journal: Sex Transm Infect Date: 2006-11-07 Impact factor: 3.519
Authors: Sarah Dougan; M Adekoyejo Balogun; Jonathan Elford; Lisa J Brant; Katy Sinka; Barry G Evans; Mary E Ramsay Journal: BMC Public Health Date: 2007-01-18 Impact factor: 3.295