Mohammed, Nagwa Evaluation of serum beta-endorphin and substance P in knee osteoarthritis patients treated by laser acupuncture. [electronic resource] - Journal of complementary & integrative medicine Jan 2018 Publication Type: Journal Article; Randomized Controlled Trial ISSN: 1553-3840 Standard No.: 10.1515/jcim-2017-0010 doi Subjects--Topical Terms: Acupuncture PointsAcupuncture Therapy--instrumentationAdultAgedFemaleHumansLasersMaleMiddle AgedOsteoarthritis, Knee--bloodProspective StudiesSingle-Blind MethodSubstance P--bloodTreatment Outcomebeta-Endorphin--metabolism