Buprenorphine+Norbuprenorphine:PrThr:Pt:Urine:Ord
buprenorphine+norbuprenorphine:prthr:pt:urine:ord
Buprenorphine+Norbuprenorphine:Presence or Threshold:To identify measures at a point in time:Urine:Ordinal
buprenorphine+norbuprenorphine:presence or threshold:to identify measures at a point in time:urine:ordinal