Count | |
| 2 | |
| 3 | |
| 18 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 2 | |
| 1 | |
| 1 | |
Electrocardiography/instrumentation/*methods/statistics & numerical data | 1 |
| 327 | |
| 58 | |
| 1 | |
| 4 | |
| 1 | |
| 30 | |
| 1 | |
| 1 | |
| 32 | |
| 6 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 223 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 3 | |
| 1 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 27 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 2 | |
| 1 | |
| 1 | |
| 3 | |
| 1 | |
| 1 | |
| 2 | |
| 2 | |
| 2 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 2 | |
| 23 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 6 | |
| 5 | |
| 8 | |
| 1 | |
| 4 | |
| 1 | |
| 4 | |
| 1 | |
| 2 | |
| 3 | |
| 2 | |
| 4 | |
| 2 | |
| 1 | |
| 2 | |
| 1 | |
| 8 | |
| 14 | |
| 9 | |
| 10 | |
| 6 | |
| 1 | |
| 2 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 4 | |
| 4 | |
| 3 | |
| 5 | |
| 4 | |