PT  - JOURNAL ARTICLE
ED  - ,
TI  - Correction
AID  - 10.1136/bmjopen-2014-004956corr1
DP  - 2014 May 01
TA  - BMJ Open
PG  - e004956corr1
VI  - 4
IP  - 5
4099  - http://bmjopen.bmj.com/content/4/5/e004956corr1.short
4100  - http://bmjopen.bmj.com/content/4/5/e004956corr1.full
SO  - BMJ Open2014 May 01; 4