Their letter says the new treatment pattern of palliative care, based on experience at a Liverpool hospice is being rolled out into hospitals and nursing homes.

BBC: 'Crisis' over terminally-ill care

Of course, there is no doubt that bad habits can be awfully hard to change, and the wrenching experience of treatment Woods is undergoing surely could help him break out of a pattern that clearly endangers the life he says he wants.

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She said it was interesting that the pattern had emerged, but far too soon to say if IVF treatment resulted in higher rates of asthma.

BBC: Fertility treatment 'asthma link'