Preparation and Administration of a Controlled-Release Delivery System of Chitosan Hydrogel loaded with Methadone and Piroxicam in Experimental Defect of Tibial in Rats; Histopathological Evaluation - Khosravian, Pegah; Javdani, Moosa; Masoudi, Melika; Mohebi, Abdolnaser; Bigham Sadegh, Amin; Barzegar, Abolfazl (Frontiers in Biomedical Technologies, 2023)