TY - RPRT TI - Systematic error in automated in-tube solid-phase microextraction. AU - Anil R Raghani AU - Kristin N Schultz PY - 2003 DO - 10.1016/s0021-9673(03)00499-0 UR - https://pubmed.ncbi.nlm.nih.gov/12800917/ ID - 12800917 ER -