Authors: Maria de Lourdes Drachler; Jose Carlos de Carvalho Leite; Lee Hooper; Chia Swee Hong; Derek Pheby; Luis Nacul; Eliana Lacerda; Peter Campion; Anne Killett; Maggie McArthur; Fiona Poland Journal: BMC Public Health Date: 2009-12-11 Impact factor: 3.295