- Patients referred due to one or more of these conditions: (1) severe facial deformity comprising more than 25% of the facial area and/or one or more of the central facial units (i.e. lip(s), nose, eye(s)), (2) single or bilateral upper limb(s) amputation, where at least one of the limbs was amputated at the level of the wrist or more proximal, up to the functional shoulder joint, and (3) severe abdominal wall defect comprising more than 50% of the functional abdominal wall.