Article Related content Article metrics Rapid responses Response Rapid Response: Correction During the editing of this article an error was introduced. In Figure 1, the box "Creatinine Kinase ≤ 4 x upper limit of normal" should instead read "Creatinine Kinase ≥ 4 x upper limit of normal. Competing interests: No competing interests 14 May 2018 Sharon Davies letters editor The BMJ, London WC1H 9JR
Rapid Response:
Correction
During the editing of this article an error was introduced. In Figure 1, the box "Creatinine Kinase ≤ 4 x upper limit of normal" should instead read "Creatinine Kinase ≥ 4 x upper limit of normal.
Competing interests: No competing interests