Natural history of multiple sclerosis
Studies which have attempted to define the outcome ot multiple sclerosis (MS) have methodologic difficulties arising from patient referral biases and the length of follow-up required, which make prospective studies of an inception cohort unrealistic. Means to improve the validity of retrospective na...
| Главный автор: | |
|---|---|
| Формат: | Journal article |
| Язык: | English |
| Опубликовано: |
2001
|