In reply to the letter to the editor by Wang et al
Mathias Opperer, Reinhard Kaufmann, Matthias Meissnitzer, Florian K Enzmann, Christian Dinges, Wolfgang Hitzl, Jürgen Nawratil, Andreas Koköfer
Regional Anesthesia & Pain Medicine Sep 2022, 47 (9) 586-587; DOI: 10.1136/rapm-2022-103715