RT Journal Article SR Electronic T1 Does gonorrhoea surveillance pay? JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 142 OP 143 DO 10.1136/sti.55.2.142 VO 55 IS 2 A1 R C Rendtorff A1 H Packer YR 1979 UL http://sti.bmj.com/content/55/2/142.abstract AB