RT Journal Article SR Electronic T1 How do I interpret and use quantitative buprenorphine and norbuprenorphine urine levels? JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 557 OP 560 DO 10.3949/ccjm.89a.21019 VO 89 IS 10 A1 Richard C. Waters A1 Matthew Perez YR 2022 UL http://www.ccjm.org/content/89/10/557.abstract AB