| PubMed: 9295278 |
| Http://: http://link.springer-ny.com/link/service/journals/00335/papers/0011005/00110409.html |
| PubMed: 15064408 |
| PubMed: 9295278 |
| Http://: http://link.springer-ny.com/link/service/journals/00335/papers/0011005/00110409.html |
| PubMed: 15064408 |