PT - JOURNAL ARTICLE ED - BMJ Publishing Group Ltd TI - Review: Killed whole-cell vaccines prevent cholera for 2 years AID - 10.1136/ebm.1999.4.42 DP - 1999 Apr 01 TA - Evidence Based Medicine PG - 42--42 VI - 4 IP - 2 4099 - http://ebm.bmj.com/content/4/2/42.short 4100 - http://ebm.bmj.com/content/4/2/42.full SO - Evid Based Med1999 Apr 01; 4