@misc{indiciaea3c9f0fcbbb3,
  title = {A multicenter study methodologic experience from a multicenter case-control study in Italy. The Italian Multiple Sclerosis Study Group.},
  author = {E Granieri and I Casetta and M R Tola},
  year = {1997},
  doi = {10.1212/wnl.49.2\_suppl\_2.s33},
  url = {https://pubmed.ncbi.nlm.nih.gov/9270691/},
  note = {Source identifier: 9270691}
}