Paper annotation: Example DOI citation document URL DOI https://doi.org/10.1136/oemed-2022-108371 Embedded Link DOI: De Roos AJ, Fritschi L, Ward MH, et al. Herbicide use in farming and other jobs in relation to non-Hodgkin’s lymphoma (NHL) risk. Occupational and Environmental Medicine 2022;79:795-806. More DOI without URL prefix: 10.9999/example.2026, 10.9876/another_2025