Acupuncture TherapyAcupuncture AnalgesiaAcupuncture PointsAcupunctureAcupuncture, EarMoxibustionMeridiansElectroacupuncturePain ManagementMedicine, Chinese TraditionalNeedlesPlacebo EffectQiIntegrative MedicineTreatment OutcomePain MeasurementRandomized Controlled Trials as TopicSingle-Blind MethodResearch DesignBell Palsy