Development and validation of the Klinefelter-Associated Neurodevelopmental Difficulties (KAND) Checklist: a three-phase mixed-methods study.

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Title: Development and validation of the Klinefelter-Associated Neurodevelopmental Difficulties (KAND) Checklist: a three-phase mixed-methods study.
Authors: Theelen K; Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium. kaat.theelen@vub.be., Galasso C; Centre for Rare Diseases, Universitair Ziekenhuis Brussel, Brussels, Belgium., Cools W; Support for Quantitative and Qualitative Research (SQUARE), Vrije Universiteit Brussel, Brussels, Belgium., Gies I; Division of Pediatric Endocrinology, Department of Pediatrics, Universitair Ziekenhuis Brussel, Brussels, Belgium.; Vitality Research Group, Vrije Universiteit Brussel, Brussels, Belgium., Vanclooster S; Mental Health and Wellbeing Research Group, Department of Health Sciences, Vrije Universiteit Brussel, Brussels, Belgium.; Centre for Medical Genetics, Antwerp University Hospital, Antwerp, Belgium., Jansen AC; Mental Health and Wellbeing Research Group, Department of Health Sciences, Vrije Universiteit Brussel, Brussels, Belgium.; Division of Pediatric Neurology, Department of Pediatrics, Antwerp University Hospital, Antwerp, Belgium.; Translational Neurosciences, University of Antwerp, Antwerp, Belgium.
Source: Journal of neurodevelopmental disorders [J Neurodev Disord] 2026 Jan 30; Vol. 18 (1), pp. 7. Date of Electronic Publication: 2026 Jan 30.
Publication Type: Journal Article; Validation Study
Journal Info: Publisher: BioMed Central Country of Publication: England NLM ID: 101483832 Publication Model: Electronic Cited Medium: Internet ISSN: 1866-1955 (Electronic) Linking ISSN: 18661947 NLM ISO Abbreviation: J Neurodev Disord Subsets: MEDLINE
Database: MEDLINE Ultimate
Description
ISSN:1866-1955
DOI:10.1186/s11689-025-09670-0