DEVELOPMENT OF OPIOID-INDUCED CONSTIPATION: POST-HOC ANALYSIS OF DATA FROM A 12-WEEK PROSPECTIVE, OPEN-LABEL BLINDED ENDPOINT STREAMLINED STUDY IN LOW-BACK PAIN PATIENTS, TREATED WITH PROLONGED-RELEASE WHO-STEP III OPIOIDS (PROBE-PHA) First published 22/09/2015 Last updated 02/04/2024 EU PAS number:EUPAS11039 Study Finalised