Kragh-Sorensen, P Plasma levels of nortriptyline in the treatment of endogenous depression. [electronic resource] - Acta psychiatrica Scandinavica 1973 - 444-56 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ISSN: 0001-690X Standard No.: 10.1111/j.1600-0447.1973.tb04437.x doi Subjects--Topical Terms: AdolescentAdultAgedChromatography, GasClinical Trials as TopicDepression--diagnosisDrug EvaluationFemaleHumansInterview, PsychologicalMiddle AgedNortriptyline--administration & dosagePlacebosPsychiatric Status Rating Scales