@misc{indiciaefbf5eb8b7ac4,
  title = {Determination of melatonin by GC-MS: problems with solid phase extraction (SPE) columns.},
  author = {C R Lee and H Esnaud},
  year = {1988},
  doi = {10.1002/bms.1200151206},
  url = {https://pubmed.ncbi.nlm.nih.gov/3416091/},
  note = {Source identifier: 3416091}
}