@article{doi:10.1001/jama.2012.7625, author = {Shirani A and Zhao Y and Karim M and et al}, title = {ASsociation between use of interferon beta and progression of disability in patients with relapsing-remitting multiple sclerosis}, journal = {JAMA}, volume = {308}, number = {3}, pages = {247-256}, year = {2012}, doi = {10.1001/jama.2012.7625}, URL = { + http://dx.doi.org/10.1001/jama.2012.7625}, eprint = {/data/Journals/JAMA/24475/joc120048_247_256.pdf} }