PT - JOURNAL ARTICLE AU - Jonathan M Rhodes TI - Oral contraceptives and Crohn's disease AID - 10.1136/gutjnl-2013-305972 DP - 2014 May 01 TA - Gut PG - 863--863 VI - 63 IP - 5 4099 - http://gut.bmj.com/content/63/5/863.2.short 4100 - http://gut.bmj.com/content/63/5/863.2.full SO - Gut2014 May 01; 63