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His request to die has been approved by two doctors and the lethal medication is self-administered.

Both are given as weekly injections via pre-filled pens self-administered into the upper arm, thigh or stomach.

According to Vashi, cosmetic dermatologists have an important role to play in educating patients about the risks associated with self-administered treatments and unregulated services sold online.

In Oregon, as in other US states that permit assisted dying, the lethal medication must be self-administered - the same is proposed in England and Wales.

The lethal medication must be self-administered.