Methamphetamine+Methylenedioxymethamphetamine:PrThr:Pt:Hair:Ord:Screen
methamphetamine+methylenedioxymethamphetamine:prthr:pt:hair:ord:screen
Methamphetamine+Methylenedioxymethamphetamine:Presence or Threshold:To identify measures at a point in time:Hair:Ordinal:Screen
methamphetamine+methylenedioxymethamphetamine:presence or threshold:to identify measures at a point in time:hair:ordinal:screen