| Http://: https://www.ncbi.nlm.nih.gov/pubmed/3997544 |
| Http://: https://www.ncbi.nlm.nih.gov/pubmed/14184033 |
| Http://: https://www.ncbi.nlm.nih.gov/pubmed/8704193 |
| Http://: https://www.ncbi.nlm.nih.gov/pubmed/3997544 |
| Http://: https://www.ncbi.nlm.nih.gov/pubmed/14184033 |
| Http://: https://www.ncbi.nlm.nih.gov/pubmed/8704193 |