TY  - RPRT
TI  - Novel high-performance liquid chromatographic and solid-phase extraction methods for quantitating methadone and its metabolite in spiked human urine.
AU  - Y F Cheng
AU  - U D Neue
AU  - L L Woods
PY  - 1999
DO  - 10.1016/s0378-4347(99)00116-4
UR  - https://pubmed.ncbi.nlm.nih.gov/10410924/
ID  - 10410924
ER  -