RT Journal Article SR Electronic T1 In reply to Schnabel et al. JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP rapm-2021-102725 DO 10.1136/rapm-2021-102725 A1 Faraj W Abdallah A1 Nasir Hussain A1 Richard Brull YR 2021 UL http://rapm.bmj.com/content/early/2021/03/24/rapm-2021-102725.abstract AB