RT Journal Article SR Electronic T1 The Field Worker in Immigrant Health JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 340 OP 340 DO 10.1136/sti.45.4.340 VO 45 IS 4 A1 Laird, S. M. YR 1969 UL http://sti.bmj.com/content/45/4/340.abstract AB