Wu, Pei Acupoint combination effect of Shenmen (HT 7) and Sanyinjiao (SP 6) in treating insomnia: study protocol for a randomized controlled trial. [electronic resource] - Trials Mar 2020 - 261 p. digital Publication Type: Clinical Trial Protocol; Journal Article ISSN: 1745-6215 Standard No.: 10.1186/s13063-020-4170-1 doi Subjects--Topical Terms: Acetylcholine--bloodAcupuncture PointsBiomarkers--bloodDopamine--bloodElectroacupunctureHumansMelatonin--bloodMulticenter Studies as TopicPolysomnographyRandomized Controlled Trials as TopicSleep Initiation and Maintenance Disorders--bloodTreatment Outcome