The medical and surgical team specialized in separating Siamese twins, led by Advisor at the Royal Court and Supervisor General of King Salman Humanitarian Aid and Relief Center (KSrelief) Dr. Abdullah bin Abdulaziz Al Rabeeah, started this morning a surgery to separate Yemeni conjoined twins "Mauda and Rahma". The surgery comes in implementation of the directives of the Custodian of the Two Holy Mosques King Salman bin Abdulaziz Al Saud and is being performed at King Abdullah Specialized Children's Hospital (KASCH). The surgery is expected to take around 11 hours and is implemented in six surgical phases, where a medical staff of twenty-eight doctors and specialists, in addition to technicians and nursing staff, are taking part in it. The twins are conjoined in the lower chest and abdomen, and according to pre-surgical examinations, they share the liver and intestines. With today's surgery, twin separation surgeries total 52 as part of the Saudi Program for Separating Conjoined Twins that included studying more than 124 Siamese twins cases from 23 countries in three continents.