How changes in depression severity and borderline personality disorder intensity are linked - a cohort study of depressed patients with and without borderline personality disorder.

"Declarations Ethics approval and consent to participateAll procedures contributing to this work comply with the ethical standards of the relevant national and institutional committees on human experimentation and are in accordance with the Helsinki Declaration of 1975, as revised in 2008. The study was approved by the Ethics Committee of the Helsinki and Uusimaa Hospital District (approval number 322/13/03/03/2012) and were granted a research permit by the City of Helsinki. All participants gave their written informed consent to participate in the study. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding Open Access funding provided by University of Helsinki (including Helsinki University Central Hospital). This research has been supported by grants from the Helsinki and Uusimaa Hospital District (TYH2022305). Open Access funding provided by University of Helsinki (including Helsinki University Central Hospital)."