RT Journal Article SR Electronic T1 Choosing equipment for colposcopy in genitourinary medicine. JF Genitourinary Medicine JO Genitourin Med FD BMJ Publishing Group Ltd SP 297 OP 301 DO 10.1136/sti.66.4.297 VO 66 IS 4 A1 Hare, M J YR 1990 UL http://sti.bmj.com/content/66/4/297.abstract AB