| The Body Surface as a Communication System: The State of the Art after 50 Years Recent countries visiting this post |  |
 | 5 | United States |
 | 1 | China |
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| The Body Surface as a Communication System: The State of the Art after 50 Years Recent countries visiting this post | |
| 5 | United States |
| 1 | China |
| 1 | Finland |
| 1 | Germany |