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Hyaluronic Acid Filler Injections for Tear-Trough Deformity: Injection Technique and High-Frequency Ultrasound Follow-up Evaluation

EngineeringSoft Tissue SurgeryTear-trough DeformityInjection TechniqueSurgeryBiomedical EngineeringUltrasoundSoft Tissue ReconstructionMedicineOrthopaedic SurgeryPlastic Surgery