Erratum

The original publication [1] is missing one reference in the reference list. This reference should be also cited within the text. This error was caused during typesetting. The publisher apologizes to the readers for the inconvenience caused. The correct reference and citation can be found here:

13. Martin Bland J, Altman D. Statistical methods for assessing agreement between two methods of clinical measurement. The Lancet. 1986. 327(8476):307-10. doi:10.1016/S0140-6736(86)90837-8.

The Bland-Altman [13] analysis of agreement method was used to compare local and central measurements.