@misc{indiciaed1cf402aa5e9,
  title = {Melatonin excretion with affect disorders over age 60.},
  author = {Daniel F Kripke and Shawn D Youngstedt and Katharine M Rex and Melville R Klauber and Jeffrey A Elliott},
  year = {2003},
  doi = {10.1016/s0165-1781(03)00060-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/12759161/},
  note = {Source identifier: 12759161}
}