| The Security Issue of Federated Data Warehouses in the Area of Evidence-Based Medicine Recent countries visiting this post |  |
 | 6 | United States |
 | 3 | |
 | 1 | Canada |
| The Security Issue of Federated Data Warehouses in the Area of Evidence-Based Medicine Recent countries visiting this post | |
| 6 | United States |
| 3 | |
| 1 | Canada |