image Australian doctors have begun a risky and tough surgery to seperate a pair of Bangladeshi twins who are joined at the head. The chance of both surviving the surgery is only one in four, doctors said.

The 16-strong team was on “tenterhooks” over the delicate bid to separate Trishna and Krishna, aged two, which will take about 16 hours, plastic surgeon Tony Holmes told reporters at Melbourne’s Royal Children’s Hospital.

“It is a stressful time for any group of surgeons with…