(Q44337919)
Statements
1 reference
Sleep and daytime sleepiness problems among patients with chronic noncancerous pain receiving long-term opioid therapy: a cross-sectional study (English)
1 reference
Aleksandra Zgierska
1 reference
Randall T Brown
1 reference
Megan Zuelsdorff
1 reference
David Brown
1 reference
Zhengjun Zhang
1 reference
Michael F Fleming
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1 November 2007
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1 reference