Opioid-induced constipation in patients with chronic noncancer pain in the USA, Canada, Germany, and the UK: descriptive analysis of baseline patient-reported outcomes and retrospective chart review
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2015 ◽
Vol 54
(11)
◽
pp. 1309-1314
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2019 ◽
Vol 37
(15_suppl)
◽
pp. e22561-e22561
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