The Correlation Between Duration of Diabetes Mellitus, Ulcer Grading, HbA1C Levels, and Peripheral Arterial Occlusion to Amputation in Patients with Diabetic Foot Ulcers at Prof. Dr. I.G.N.G Ngoerah Hospital Ida Ayu Dwi Oka Putri1*, IGAB Krisna Wibawa2, and I Wayan Sudarsa3 Abstract Background: Diabetic foot ulcers (DFU) are a lower