PT - JOURNAL ARTICLE ED - , TI - In this number AID - 10.1136/jech.49.6.557 DP - 1995 Dec 01 TA - Journal of Epidemiology and Community Health PG - 557--557 VI - 49 IP - 6 4099 - http://jech.bmj.com/content/49/6/557.1.short 4100 - http://jech.bmj.com/content/49/6/557.1.full SO - J Epidemiol Community Health1995 Dec 01; 49