Peng, Philip The known knowns and known unknowns of chronic pain. [electronic resource] - Canadian journal of anaesthesia = Journal canadien d'anesthesie Apr 2016 - 386-91 p. digital Publication Type: Editorial; Comment ISSN: 1496-8975 Standard No.: 10.1007/s12630-015-0579-5 doi Subjects--Topical Terms: Chronic PainHumans