Table 3.

Inclusion and Exclusion Criteria

Inclusion criteria
All ages (data on children only available from specialist services).
Has chronic edema of longer than 3 months.
Is able to understand the study as set out in the information sheet.
Is able to give informed consent, that is, (gives explicit consent for their data to be transferred into an international data base).

Exclusion criteria
Is unwilling or unable to participate for whatever reason.
Is receiving end-of-life care.
When considered to not be in the patient's best interest (decided by the lead clinician managing their care).