@misc{indiciaebdf570c1df98,
  title = {Resolution of age-dependent reference intervals: polynomial regression methodology with applicability to plasma zinc levels in a childhood population.},
  author = {G P Butrimovitz and W C Purdy},
  year = {1979},
  doi = {10.1016/s0009-9120(79)90056-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/445790/},
  note = {Source identifier: 445790}
}