Gingival RecessionTissue DonorsGingivoplastyDeltaretrovirus InfectionsDeltaretrovirus AntibodiesConnective TissueLeptospira interrogans serovar canicolaTooth RootNucleic Acid Amplification TechniquesGingivaIntracranial HypotensionTissue EngineeringTissue ScaffoldsMesenchymal Stem Cell TransplantationGraft SurvivalLiving DonorsBlood DonorsGraft Occlusion, VascularBlood Vessel ProsthesisKidney TransplantationPolytetrafluoroethyleneLiver TransplantationVascular PatencyPolyethylene TerephthalatesGraft vs Host DiseaseSaphenous VeinTreatment OutcomePrimary Graft DysfunctionTissue and Organ ProcurementBlood Vessel Prosthesis ImplantationTime FactorsTissue and Organ HarvestingVeinsCadaverPostoperative ComplicationsRetrospective StudiesReoperationHistocompatibility TestingCoronary Artery BypassOrgan PreservationHeart TransplantationBone Marrow TransplantationImmunosuppressive AgentsAnastomosis, Surgical