ScalpAlopeciaPostoperative ComplicationsBariatric SurgeryElectroencephalographyHairTreatment OutcomeDermatitis, SeborrheicGeneral SurgeryThoracic SurgeryCardiac Surgical ProceduresRetrospective StudiesAlopecia AreataPostoperative PeriodSurgery, PlasticTime FactorsProspective StudiesFollow-Up StudiesPreoperative CareHair DiseasesTinea CapitisPiedraNeurosurgical ProceduresThoracic Surgery, Video-AssistedCataract ExtractionHair FollicleSurgery, Computer-AssistedSurgical Procedures, OperativePostoperative CareCoronary Artery BypassHemangiosarcomaSurgery, Oral