A Multicenter Hybrid Platform Trial Comparing the Effects of a Prospective Cohort Treated With a Saline-hydrated Allogeneic Dual-layer Amniotic Membrane Product or a Synthetic, Resorbable Polymeric Wound Matrix to a Coarsened Exact Matched Retrospective Control Cohort of Patients With Hard-to-heal DFUs and VLUs | Arctuva