title: Vietnamese people in study may have had language difficulties.
authors.forename: J S
authors.initials: JS
authors.lastname: Nguyen-Van-Tam
authors.forename: R J
authors.initials: RJ
authors.lastname: Madeley
mesh_terms: D003144:Communication Barriers; D006801:Humans; D007407:Interviews as Topic; D007802:Language; D008131:London; D011314:Preventive Health Services; D014744:Vietnam / Q000208:ethnology