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Continue to ChatUmbilical cord blood serum therapy for the management of persistent corneal epithelial defects - https://avesis.hacettepe.edu.tr/yayin/0ee056f8-ccba-44d1-8f5f-3a7c11779fa3/umbilical-cord-blood-serum-therapy-for-the-management-of-persistent-corneal-epithelial-defects