Evidence
| Source | Type |
|---|---|
| Toxicology | Causal agent |
| Dose–effect/response data | |
| Toxicity and disease mechanisms | |
| Candidate biomarkers for biological monitoring | |
| Epidemiology | Causal agent/process |
| Exposure–effect/response data | |
| Validation of biomarkers for biological monitoring | |
| Occupational medicine | Clinical observation of disease from routine or specific medical surveillance |
| Occupational hygiene | Exposure measurements in comparison to control limits |
| Unions/workers | Reports of complaints or ill health among workers |