@misc{indiciaeb27c94bb329f, title = {Primary progressive multiple sclerosis: cerebrospinal fluid considerations.}, author = {Mark S Freedman}, year = {2004}, doi = {10.1191/1352458504ms1028oa}, url = {https://pubmed.ncbi.nlm.nih.gov/15218807/}, note = {Source identifier: 15218807} }