TY - RPRT TI - An improved method for determining 89Sr and 90Sr in urine. AU - M L Dietz AU - E P Horwitz AU - D M Nelson AU - M Wahlgren PY - 1991 DO - 10.1097/00004032-199112000-00020 UR - https://pubmed.ncbi.nlm.nih.gov/1955331/ ID - 1955331 ER -