@misc{indiciae6fa8780e40f3, title = {Serum calcium ion activity. Some aspects on methodological differences and intraindividual variation.}, author = {L Larsson and S Ohman}, year = {1979}, doi = {10.1016/s0009-9120(79)80141-1}, url = {https://pubmed.ncbi.nlm.nih.gov/487563/}, note = {Source identifier: 487563} }