BERN, Switzerland, Feb. 1 (UPI) -- Two 8-day-old conjoined sisters were separated, maybe the youngest babies ever to undergo the procedure, doctors said.
Lydia and Maya were joined at the liver, but had all other separate vital organs, Swiss media said.
A medical team of 13 performed the highly risky five-hour operation at Inselspital Hospital in Bern in December, with only a 1 percent chance of success.
The mother also gave birth to a triplet who was separate and healthy.
Doctors planned to do the operation several months later, but because an imbalance in blood flow, giving one of the twins too much blood and the other too little, the operation was done when the twins were just 8 days old.
The girls have since undergone surgery to close their abdominal walls. Both are recovering and have begun breast feeding.
The hospital says the two are "still very small" but doing well.