Sisters conjoined at the head are separated after 50 hours of surgery

Conjoined twins Safa and Marwa are recovering well after complex surgery at London's Great Ormond Street Hospital.

London (CNN)A pair of Pakistani conjoined twins are finally living independent lives after a 100-strong team of British medical experts spent 50 hours performing complex surgery to separate them.

Safa and Marwa Ullah came as a bit of a surprise when they were born in January 2017 as their mother had not known she was expecting twins -- let alone craniopagus twins, who are joined at the head.
Around two in five sets of craniopagus twins are stillborn or die during labor, while a third more do not survive the first 24 hours. Fortunately in the sisters' case, a wealthy benefactor offered to cover the costs of their long journey from home in Charsadda, Pakistan, for the surgery at London's Great Ormond Street Hospital (GOSH).
According to its website,