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Healing rates (percentage number of completely healed ulcers) at the follow-up analysis (after 3 months). *Fisher test. Groups I and III: 16.66% versus 58.82%, P < 0.001, groups II and III: 16.66% versus 58.82%, P < 0.001, and groups III and IV: 58.82% versus 16.66%, P < 0.001.
