TY - JOUR T1 - Correction JF - BMJ Open JO - BMJ Open DO - 10.1136/bmjopen-2013-003347corr1 VL - 3 IS - 12 SP - e003347corr1 A2 - , Y1 - 2013/12/01 UR - http://bmjopen.bmj.com/content/3/12/e003347corr1.abstract N2 - Castro A, Jost H, Cox D, et al. A comparison of the analytical … ER -