Those who apply for data (e.g. pathologists, trainee pathologists, other medical specialists, epidemiologists, health scientists, biomedical scientists) can retrieve data. The involvement of of a pathologist in the application is required. A pathologist is best placed to judge which diagnostic terms should be used in searches. Pathologists can also explain to their fellow applicants how requests should be structured and how data from PALGA's database should be interpreted. PALGA’s consultants can mediate in the process of involving a pathologist in the request.