HemorrhoidsHemorrhoidectomySurgical StaplingPelvic InfectionSuturesDiathermyPain, PostoperativeAnal CanalDigestive System Surgical ProceduresPostoperative HemorrhageFissure in AnoElectrocoagulationOintmentsAnus DiseasesUrinary RetentionLigationHospitals, CommunitySuture TechniquesPain MeasurementHong KongTreatment OutcomePostoperative CareColonoscopy