PT  - JOURNAL ARTICLE
ED  - ,
TI  - Correction
AID  - 10.1136/bmjopen-2012-001972corr1
DP  - 2013 Jan 01
TA  - BMJ Open
PG  - e001972corr1
VI  - 3
IP  - 4
4099  - http://bmjopen.bmj.com/content/3/4/e001972corr1.short
4100  - http://bmjopen.bmj.com/content/3/4/e001972corr1.full
SO  - BMJ Open2013 Jan 01; 3