RT Journal Article SR Electronic T1 Reply to Dr Nielsen: Pericapsular Nerve Group (PENG) block for hip fracture JF Regional Anesthesia & Pain Medicine JO Reg Anesth Pain Med FD BMJ Publishing Group Ltd SP 415 OP 416 DO 10.1136/rapm-2018-100234 VO 44 IS 3 A1 Philip W H Peng A1 Anahi Perlas A1 Ki Jinn Chin YR 2019 UL http://rapm.bmj.com/content/44/3/415.2.abstract AB