RT Journal Article SR Electronic T1 Sexually transmitted diseases in Ontario. JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 300 OP 303 DO 10.1136/sti.55.4.300 VO 55 IS 4 A1 R D Catterall YR 1979 UL http://sti.bmj.com/content/55/4/300.abstract AB