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[1] U.S. Food and Drug Administration (FDA). Biocompatibility Testing of Medical Devices. Washington, D.C., USA.
[2] Harvard Medical School. Stability Assessment of Thermoplastic Polyurethane in Simulated Body Environments. Boston, MA, USA.
[3] Fraunhofer Institute for Manufacturing Technology and Advanced Materials. Enhancing Water Vapor Permeability of TPU Films. Dresden, Germany.
[4] Toray Industries Inc. Development of Nano-Reinforced TPU Composite Materials. Tokyo, Japan.
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