Acupuncture PointsEndorphinsAcupuncture TherapyAcupunctureMeridiansAcupuncture AnalgesiaMoxibustionAcupuncture, EarElectroacupuncturebeta-EndorphinTranscutaneous Electric Nerve StimulationNaloxonebeta-LipotropinEnkephalinsEar, ExternalReceptors, OpioidGalvanic Skin ResponseWristSkin Physiological PhenomenaAdrenocorticotropic HormonePainElectric Stimulation TherapyPain MeasurementPilot ProjectsTreatment OutcomePain Management