(CNN) Two sisters, who were joined in the chest and abdomen, have been successfully separated in a surgery by a 78-member team in Nigeria's capital, Abuja.

Mercy and Goodness Ede are now well enough to go home six weeks after surgery, according to pediatric surgeon Emmanuel Ameh, who led the team that performed the operation at the National Hospital.

The surgery to separate the twins happened in November last year but details have only just been released by the hospital, because they wanted to ensure there were no post surgery complications.

The girls are the first to be successfully separated at the government-run specialist center, National Hospital spokesman Dr. Tayo Haastrup told CNN.

The girls after the operation in December

It took around 13 hours for the team working from two operating theaters at the hospital to separate the twins, according to the hospital.

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