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Not an individual correction calculator.\nexposure: Observed variation in body composition\nevidence_span: {\"source_cache\": \"artifacts/sodium-research/13575523.fulltext.txt\", \"locator\": \"Exact primary full-text span; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"ee58d9f6c640fec095876c15e7ddf6fe8bf539cb972c74841db02d2640eebbe2\", \"start_char\": 54337, \"end_char\": 56036, \"text_sha256\": \"29b3a155f7b33a8b86aa9e30182063d71f5af3c60910a237794c1310094a4c39\"}\n[sodium-p13575523] Interrelations between serum sodium concentration, serum osmolarity and total exchangeable sodium, total exchangeable potassium and total body water. (1958). https://pubmed.ncbi.nlm.nih.gov/13575523/ DOI: 10.1172/jci103712","model_system":"Simultaneous isotope-dilution and serum measurements, including serial observations","directness":"author_interpretation","verification_status":"source_derived_draft","notes":"Exact curation-document quotation, not publisher quotation. 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