AFS AI bias Antibiofilmogram Charcot foot reconstruction NO-CLI PBMNCs Staphylococcus aureus amputation-free survival amputations ankle/brachial index antibiotics biocomposite biofilm calcium sulphate cardiovascular/stroke risk stratification cell therapy classification clinical practice critical limb ischemia deep learning diabetes diabetes complications diabetes mellitus diabetic foot diabetic foot complications diabetic foot infection diabetic foot infections diabetic foot osteomyelitis diabetic foot ulcer diabetic foot ulcers