| Risk factors | 1) Life style | 4 | 50.0% |
| 2) Environmental | 2 | 25.0% | |
| 3) Demographic | 1 | 12.5% | |
| 4) Medical | 1 | 12.5% | |
| 5) Genetic | 0 | 0.0% | |
| Signs and symptoms | N/A | 8 | 100% |