RT Journal Article SR Electronic T1 Sexually transmitted disease control in developing countries: the challenge of involving the private sector. JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 283 OP 285 DO 10.1136/sti.75.5.283 VO 75 IS 5 A1 R Brugha A1 A B Zwi YR 1999 UL http://sti.bmj.com/content/75/5/283.abstract AB