TY - RPRT TI - The priority toxicant reference range study: interim report. AU - L L Needham AU - R H Hill AU - D L Ashley AU - J L Pirkle AU - E J Sampson PY - 1995 DO - 10.1289/ehp.95103s389 UR - https://pubmed.ncbi.nlm.nih.gov/7635119/ ID - 7635119 ER -