TY - RPRT TI - Automated solid-phase extraction and two-step derivatisation for simultaneous analysis of basic illicit drugs in serum by GC/MS. AU - W Weinmann AU - M Renz AU - S Vogt AU - S Pollak PY - 2000 DO - 10.1007/s004149900098 UR - https://pubmed.ncbi.nlm.nih.gov/10929239/ ID - 10929239 ER -