The British Medical Association (BMA) said the "important study" confirmed that passive smoking kills.
Dr Mark Porter, chairman of the British Medical Association's consultants committee, agreed there was an issue.
The British Medical Association's letter to Sir David Nicholson follows reported problems in trial areas.
The British Medical Association has also complained that senior doctors' workloads are becoming too much.
Meanwhile, both the Royal College of Nursing and British Medical Association have cautiously welcomed the changes.
Bolton NHS Foundation Trust said the proposal is being discussed with union the British Medical Association.
BBC: Royal Bolton Hospital cuts: Doctors asked to accept pay cut
Dr Bob Broughton, Welsh Secretary of the British Medical Association, gave a cautious welcome the news.
The British Medical Association also seeks to make rationing more transparent through wider public consultation.
The British Medical Association said it had no figures the proportion of doctors who support euthanasia.
The British Medical Association said it was "surprised by the scale of the job cuts".
But Dr Paul Flynn, of the British Medical Association consultants' committee, defended the scheme.
And Dr John Powell, chairman of the British Medical Association's IT committee, backed the opposition.
Also honoured is Dr John Chisholm, the chairman of the GP's Committee at the British Medical Association.
Paul Miller, chairman of the British Medical Association's Consultants Committee, was also unimpressed by Mr Milburn's claims.
Meanwhile, Dr Hamish Meldrum, chairman of the British Medical Association, has warned against the London polyclinic proposals.
Dr Hamish Meldrum, chairman of the British Medical Association, said there were moves to encourage more brief interventions.
The British Medical Association has asked for an urgent meeting with Health Secretary Jeremy Hunt over the issue.
His concerns are endorsed by Dr Paul Cundy, the British Medical Association's adviser on computers in general practice.
"The British Medical Association and other organisations have already taken legal advice on setting up chambers, " he said.
And the British Medical Association has questioned whether the centres are a cost-effective way of providing NHS care.
Dr David Bailey, chairman of the British Medical Association's GP committee, agreed that awareness was the main issue.
The move was criticised by the British Medical Association, which represents more than 140, 000 doctors and medical students.
The British Medical Association (BMA) in Scotland welcomed the move but said clinical care should be the priority.
Dr John Chisholm, chair of the British Medical Association's GP Committee (GPC) said the award was "pathetically low".
The British Medical Association, Royal College of Nursing and road safety charity Brake are among groups supporting the move.
Meanwhile, the Welsh branch of the British Medical Association has expressed scepticism about the publication of figures on operations.
Government negotiators have also reached a deal with the British Medical Association to revamp the way GPs are paid.
However, senior members of the British Medical Association were sceptical about the plans.
British Medical Association GP leader Dr Laurence Buckman said people were "scared stiff" when they did not need to be.
However, Dr John Canning, a GP in Middlesbrough and a committee chairman at the British Medical Association, welcomed the changes.
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