RT Journal Article SR Electronic T1 New York besieged: 11 September and after JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 2 OP 3 DO 10.1136/jech.56.1.2 VO 56 IS 1 A1 Sally Conover A1 Zena Stein A1 Ezra Susser A1 Mervyn Susser YR 2002 UL http://jech.bmj.com/content/56/1/2.abstract AB