Characteristics of 14 control patients
| Patient No | Sex/age (years) | Cause of medical surveillance |
| 1 | M/73 | Chest pain |
| 2 | M/50 | Palpitations |
| 3 | M/78 | Anginal syndrome |
| 4 | M/78 | Anginal syndrome |
| 5 | M/66 | Chest pain |
| 6 | M/72 | Palpitations |
| 7 | M/74 | Anginal syndrome |
| 8 | F/71 | Palpitations |
| 9 | F/57 | Chest pain |
| 10 | M/51 | Chest pain |
| 11 | M/61 | Chest pain |
| 12 | F/45 | Palpitations |
| 13 | F/70 | Anginal syndrome |
| 14 | M/85 | Chest pain |