StomatitisMucositisMouth MucosaBenzydamineGlossitisFibroblast Growth Factor 7MouthwashesRadiation InjuriesRadiotherapyLaser Therapy, Low-LevelOral HemorrhageOral UlcerHead and Neck NeoplasmsRadiation Injuries, ExperimentalRadiation-Protective AgentsLasers, SemiconductorTransplantation ConditioningAntineoplastic Combined Chemotherapy ProtocolsFluorouracilChlorhexidineDrug-Related Side Effects and Adverse ReactionsOral HygieneTreatment OutcomeHematopoietic Stem Cell TransplantationAnti-Infective Agents, LocalMouthAntineoplastic AgentsMesocricetusCandidiasis, OralPrimary PreventionNeoplasmsParenteral Nutrition, TotalHematologic NeoplasmsCombined Modality TherapyDouble-Blind MethodNeutropeniaWhole-Body IrradiationCranial IrradiationProspective StudiesLeukemiaAdministration, TopicalSeverity of Illness IndexEtoposideBone Marrow TransplantationCyclophosphamidePilot ProjectsLymphomaPrecursor Cell Lymphoblastic Leukemia-LymphomaSecondary PreventionCenters for Disease Control and Prevention (U.S.)PainSalivaFibroblast Growth FactorsStatistics, NonparametricAntimetabolites, AntineoplasticRecombinant ProteinsDrug Administration ScheduleCricetinaeXerostomiaMethotrexateAccident PreventionLeucovorin