A prospective study on the natural history of multiple sclerosis: clues to the conduct and interpretation of clinical trials
| Autor: | Amato, Maria Pia *, Ponziani, Giuseppina, Bartolozzi, Maria Letizia, Siracusa, Gianfranco |
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| Zdroj: | In Journal of the Neurological Sciences 1999 168(2):96-106 |
| Databáze: | ScienceDirect |
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