@misc{indiciae37eaba4befa9,
  title = {Secondary depression: a comparison among subtypes.},
  author = {D E Giles and M M Biggs and H P Roffwarg and P J Orsulak and A J Rush},
  doi = {10.1016/0165-0327(87)90034-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/2956309/},
  note = {Source identifier: 2956309}
}