Kupfer, D J Maintenance treatment in recurrent depression: current and future directions. The first William Sargant Lecture. [electronic resource] - The British journal of psychiatry : the journal of mental science Sep 1992 - 309-16 p. digital Publication Type: Journal Article ISSN: 0007-1250 Standard No.: 10.1192/bjp.161.3.309 doi Subjects--Topical Terms: AdolescentAdultAgedBiomarkersChronic DiseaseDepressive Disorder--diagnosisElectroencephalographyForecastingHumansImipramine--therapeutic useLongitudinal StudiesMiddle AgedPlacebosPsychotherapyRecurrenceSleep--physiology