 The overwhelming majority of euthanasia cases are handled by GPs. But the Centre of Expertise, where Jan and Els applied, supervised around 15% of the total number of euthanasia deaths last year. A quarter of all patients who fill in the forms will decide not to go ahead. On average, the Centre grants around a third of the requests it receives. Crucially, in the case of a couple who wish to end their lives together, doctors must be certain one of them isn't influencing the other.