Krebs, E EEG and clinical profile of a synthetic analogue of methionine-enkephalin - FK 33-824. [electronic resource] - Pharmakopsychiatrie, Neuro-Psychopharmakologie Jan 1979 - 86-93 p. digital Publication Type: Clinical Trial; Journal Article ISSN: 0031-7098 Standard No.: 10.1055/s-0028-1094598 doi Subjects--Topical Terms: AdultBehavior--drug effectsClinical Trials as TopicDepression--drug therapyDouble-Blind MethodElectroencephalographyEndorphins--pharmacologyEnkephalins--adverse effectsHumansMaleMiddle AgedPlacebosSchizophrenia--drug therapy