RT Journal Article SR Electronic T1 Improving response rates for self collected urine samples JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 346 OP 347 DO 10.1136/sti.79.4.346-a VO 79 IS 4 A1 J Hocking A1 S Tabrizi A1 D Jolley A1 S M Garland A1 C K Fairley YR 2003 UL http://sti.bmj.com/content/79/4/346.2.abstract AB