Institution: | (1) King's College London; Pain Clinical Research Hub, Denmark Hill Campus, London, UK;(2) Anesthesiology Department, Royal Free Hospital, Pond Street, London, UK;(3) Anesthesiology Department, Queen's Mary Hospital, Frognal Avenue, Sidecup, UK;(4) Anaesthesiology Department, Lewisham University Hospital, Lewisham High Street, London, UK |