@misc{indiciae25e8f9b7a126, title = {Optic neuritis and multiple sclerosis. An epidemiologic study.}, author = {A K Percy and F T Nobrega and L T Kurland}, year = {1972}, doi = {10.1001/archopht.1972.01000020137004}, url = {https://pubmed.ncbi.nlm.nih.gov/5057861/}, note = {Source identifier: 5057861} }