TY - GENERIC DO - 10.20944/preprints202409.0194.v1 UR - http://dx.doi.org/10.20944/preprints202409.0194.v1 TI - Determination of Nine Fentanyl and Six Amphetamine Drugs in Hair Samples by GC-MS/MS and LC-MS/MS T2 - Preprints AU - Wei, Qi AU - Su, Fuhai PY - 2024 DA - 2024/09/03 PB - Preprints