Acupuncture TherapyAcupunctureAcupuncture AnalgesiaAcupuncture PointsPlacebosAcupuncture, EarPlacebo EffectMoxibustionMeridiansElectroacupunctureDouble-Blind MethodPain ManagementTreatment OutcomeMedicine, Chinese TraditionalNeedlesQiIntegrative MedicineRandomized Controlled Trials as TopicPain MeasurementSingle-Blind Method