TY - RPRT TI - Cost/variance optimization for human exposure assessment studies. AU - Roy W Whitmore AU - Edo D Pellizzari AU - Harvey S Zelon AU - Larry C Michael AU - James J Quackenboss PY - 2005 DO - 10.1038/sj.jea.7500424 UR - https://pubmed.ncbi.nlm.nih.gov/15886716/ ID - 15886716 ER -