preferred_name: Number of unhealed stage 2 ulcers known to be present for more than 1 month
preferred_name_lc: number of unhealed stage 2 ulcers known to be present for more than 1 month
label: Number of unhealed stage 2 ulcers known to be present for more than 1 month
label_lc: number of unhealed stage 2 ulcers known to be present for more than 1 month