PT - JOURNAL ARTICLE ED - , TI - Correction: <em>Factor structure and convergent validity of the Derriford Appearance Scale-24 using standard scoring versus treating ‘not applicable’ responses as missing data: a Scleroderma Patient-centered Intervention Network (SPIN) cohort study</em> AID - 10.1136/bmjopen-2017-018641corr1 DP - 2018 May 01 TA - BMJ Open PG - bmjopen-2017-018641corr1 VI - 8 IP - 5 4099 - http://bmjopen.bmj.com/content/8/5/bmjopen-2017-018641corr1.short 4100 - http://bmjopen.bmj.com/content/8/5/bmjopen-2017-018641corr1.full SO - BMJ Open2018 May 01; 8