The work by East Midlands doctors supports preliminary findings from national research published last month.
However, both studies show significant improvements in survival rates for babies born at 24 and 25 weeks. The study is published in the British Medical Journal days after an MP launched a bid to cut the abortion limit from 24 to 20 weeks. Nadine Dorries is tabling an amendment to the Human Fertilisation and Embryology Bill, which will be debated in the coming weeks.

Full story: news.bbc.co.uk