| Type | Journal Article - BMJ |
| Title | On the Risk of Multiple Sclerosis According to Age at Immigration to South Africa |
| Author(s) | |
| Volume | 3 |
| Issue | 5777 |
| Publication (Day/Month/Year) | 1971 |
| Page numbers | 725-729 |
| URL | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1798906/pdf/brmedj02667-0015.pdf |
| » | South Africa - Population Census 1960 |