Nicole McDonald posted in Facebook that her 13-month-old sons Jason and Anias, who were conjoined twins, were finally separated after 20 hours of surgery at Montefiore Medical Center Children's Hospital in Bronx on Friday.

Dr. James Goodrich, who led the surgery of Jason and Anias, informed Nicole McDonald and her husband Christian McDonald at 3 a.m. that their sons were successfully separated. The spokeswoman for Montefiore Hospital said the boys are well and recovering at the hospital's Pedriatric Critical Care Unit.

It was a great relief for Nicole to hear the news after days of agony on their decision to go ahead with the surgery, which may have a great risk to the twins including death or brain damage for one or both of the boys.

Nicole described the news as "one of celebration mixed with uncertainty."

She also said that Jason did better than his brother Anias during the risky procedure, adding that the doctors said that he may not be able to move a part of his body at first.

Nicole said, "We are standing on the brink of a vast unknown. We just took a huge leap of faith, but now we are back to taking baby steps."

This family has endured so much and still standing even if they do not know what will happen next. Nicole braved to decide for the sake of her two sons.We may call this surgery a miracle because, according to  the University of of Maryland Medical Center, the survival rate of conjoined twins are between 5 and 25 percent only.