Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleOPRM1 Gene Interaction with Sleep in Chronic Pain Patients Treated with Opioids.AuthorsMargarit, César; Ballester, Purificación; Inda, María-del-Mar; Roca, Reyes; Gomez, Luis; Planelles, Beatriz; Ajo, Raquel; Morales, Domingo; Peiró, Ana M.; Margarit, Cesar; Ballester, Purificacion; Inda, Maria-Del-Mar; Peiro, Ana MPublicationPain Physician, 2019, Vol 22, Issue 1, p97ISSN1533-3159Publication typejournal article