The proposals for maternity are part of a wider vision of delivering all women's gynaecology and obstetrics care in networks, similar to the model which has helped improve cancer treatments in England.
One said she could not comment "adequately" on her skills and the other said she had only worked with her on foetal medicine and could not comment on her obstetrics and gynaecology skills.
BBC: Jersey doctor who operated unsupervised not interviewed
The report is to be published in next month's British Journal of Obstetrics and Gynaecology.
Professor Stuart Campbell, head of obstetrics and gynaecology at St George's Hospital Medical School, has pioneered the 4-D ultrasound scanning.
Dr Dolores Moyano Ontiveros is accused of puncturing a patient's major vein in 2006 while operating unsupervised as a obstetrics and gynaecology consultant.
BBC: Jersey doctor who operated unsupervised not interviewed
Dr Maggie Blott, of the Royal College of Obstetrics and Gynaecology, told BBC News Online that women should be able to give birth in comfortable surroundings.
The study was published in the journal Obstetrics and Gynaecology.
"The donating mothers are up and walking and will be discharged from the hospital within a few days, " said Mats Brannstrom, a professor of obstetrics and gynaecology at the university.
Philip Steer, Professor of Obstetrics and Gynaecology at Chelsea and Westminster Healthcare NHS Trust, said would-be mothers with CHD should receive advice and counselling about the risks before they become pregnant.
Professor Andrew Shennan, professor of Obstetrics and Gynaecology at King's College London and spokesperson for the baby charity Tommy's, agreed with the researchers recommendations for identifying and monitoring those at increased risk.
His comments were echoed by Dr Karl Nygren, associate professor of obstetrics and gynaecology at Sofiahemmet Hospital in Stockholm, who told a news briefing at the conference that doctors could easily solve the problem.
John Shepherd, a professor of obstetrics and gynaecology at St Bartholomew's, told the Sunday Telegraph the success of Britain's cervical cancer screening programme meant that the disease was being caught in its early stage in many more patients.
Lead researcher Professor Gordon Smith, an expert in obstetrics and gynaecology at the University of Cambridge, told BBC News Online that the ability of a woman to become pregnant twice while still a teenager was probably a modern phenomenon.
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