RT Journal Article SR Electronic T1 In reply to the letter to the editor by Wang et al JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP rapm-2022-103715 DO 10.1136/rapm-2022-103715 A1 Mathias Opperer A1 Reinhard Kaufmann A1 Matthias Meissnitzer A1 Florian K Enzmann A1 Christian Dinges A1 Wolfgang Hitzl A1 Jürgen Nawratil A1 Andreas Koköfer YR 2022 UL http://rapm.bmj.com/content/early/2022/06/14/rapm-2022-103715.abstract AB