RT Journal Article SR Electronic T1 Increased number of the cases of syphilis in Trabzon, a trade city in the Black Sea region of Turkey. JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 377 OP 377 DO 10.1136/sti.74.5.377 VO 74 IS 5 A1 Apaydin, R A1 Bilen, N G A1 Gül, U A1 Bahadir, S YR 1998 UL http://sti.bmj.com/content/74/5/377.abstract