RT Journal Article SR Electronic T1 Reply to Dr Yu et al: Inadvertent quadriceps weakness following the pericapsular nerve group (PENG) block JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 613 OP 614 DO 10.1136/rapm-2018-100263 VO 44 IS 5 A1 Laura Giron Arango A1 Philip Peng YR 2019 UL http://rapm.bmj.com/content/44/5/613.abstract AB