preferred_name: Stage 4. A full thickness of skin and subcutaneous tissue is lost, exposing muscle or bone.
preferred_name_lc: stage 4. a full thickness of skin and subcutaneous tissue is lost, exposing muscle or bone.
label: Stage 4. A full thickness of skin and subcutaneous tissue is lost, exposing muscle or bone.
label_lc: stage 4. a full thickness of skin and subcutaneous tissue is lost, exposing muscle or bone.