RT Journal Article SR Electronic T1 Epidemiology in Military and Veteran Populations JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 461 OP 462 DO 10.1136/jech.46.4.461-c VO 46 IS 4 A1 Peter Blackburn YR 1992 UL http://jech.bmj.com/content/46/4/461.4.abstract AB