King Salman Humanitarian Aid and Relief Center (KSrelief) has concluded here yesterday its voluntary medical campaign for children heart catheterization surgeries in Mukalla, Hadhramaut Governorate. The center's voluntary medical team conducted 93 operations, including 83 heart catheterization surgeries and 10 open-heart operations. This campaign comes within the framework of the humanitarian aid provided by the Kingdom of Saudi Arabia, represented by the KSrelief, to the Yemeni people.