RT Journal Article SR Electronic T1 Opportunistic infections in patients with the acquired immunodeficiency syndrome JF Genitourinary Medicine JO Genitourin Med FD BMJ Publishing Group Ltd SP 49 OP 49 DO 10.1136/sti.66.1.49 VO 66 IS 1 A1 Forster, SM YR 1990 UL http://sti.bmj.com/content/66/1/49.1.abstract AB