TY - RPRT TI - A tool for balancing activity from isotopes used for the radioactive microsphere method. AU - M Kleen AU - O Habler AU - K Messmer PY - 1997 DO - 10.1016/s0169-2607(97)01808-7 UR - https://pubmed.ncbi.nlm.nih.gov/9186044/ ID - 9186044 ER -