Gingival RecessionGingivoplastyConnective TissueTransplantsTooth RootGingivaSurgical FlapsTissue EngineeringTissue ScaffoldsMesenchymal Stem Cell TransplantationGraft SurvivalGraft Occlusion, VascularBlood Vessel ProsthesisPolytetrafluoroethyleneVascular PatencyPolyethylene TerephthalatesSaphenous VeinKidney TransplantationBlood Vessel Prosthesis ImplantationPrimary Graft DysfunctionVeinsLiver TransplantationTreatment OutcomeCoronary Artery BypassReoperationTime FactorsAnastomosis, Surgical