Original sentence: But it is also noted that non-voluntary euthanasia, which is illegal in all the countries, became to be practised under an agreement between physicians and district attorneys, precisely only in The Netherlands after voluntary euthanasia was legalized there.Involuntary euthanasia is often cited as the end-point in the slippery slope argument against legalising any form of euthanasia,.Recent studies show that the official reports of euthanasia in The Netherlands doesn't show that the legalisation of physician-assisted suicide decrease nor increase the prevalence of involuntary euthanasia
Edited sentence: Involuntary euthanasia is often cited as the end-point in the slippery slope argument against legalising any form of euthanasia, although recent studies show that the available evidence suggests that the legalisation of physician-assisted suicide might actually decrease the prevalence of involuntary euthanasia