title: Dangerous subtlety: relationship-related determinants of consistency of condom use among female sex workers and their regular, non-commercial partners in Hai Phong, Viet Nam.
authors.affiliation: Yale School of Public Health, Yale University, New Haven, CT, USA. Leah.Hoffman@aya.yale.edu.
authors.forename: Leah
authors.initials: L
authors.lastname: Hoffman
authors.forename: Ha Thi Thu
authors.initials: HT
authors.lastname: Nguyen
authors.forename: Trace S
authors.initials: TS
authors.lastname: Kershaw
authors.forename: Linda M
authors.initials: LM
authors.lastname: Niccolai