@misc{indiciae224e8ee51bbb,
  title = {NOR variability in twins.},
  author = {R Weltens and M Kirsch-Volders and L Hens and E Defrise-Gussenhoven and C Susanne},
  year = {1985},
  doi = {10.1017/s0001566000004669},
  url = {https://pubmed.ncbi.nlm.nih.gov/3832727/},
  note = {Source identifier: 3832727}
}