Publications by authors named "Klaus Birkelund Johansen"

Introduction: To assess the effect of long-term isolation on the mental state of Danish youth. This study aimed to investigate trends in paracetamol overdoses among people under 18 years of age in Denmark during Covid-19 restrictions as an indicator of mental health.

Methods: All patients under the age of 18 years presenting with paracetamol overdose at one of the 18 paediatric departments in Denmark from 2016 to 2021 were included.

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Aim: The longitudinal health status of Danish children with alpha-1 antitrypsin deficiency had never previously been characterised. This study aimed to assess the changes in growth, lung and liver function through childhood in these children.

Methods: Danish children diagnosed between 2005 and 2020 with pathogenic variants in the Serpin family A member 1 gene were included.

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Objectives: The aim of this cross-sectional study was to assess the state of disease at the time of diagnosis in Danish children with α 1 -antitrypsin deficiency as Denmark has a high prevalence of ZZ-homozygosity.

Methods: Children either heterozygous, compound heterozygous, or homozygous for Z- and S-variants in the SERPINA1 -gene were included. Clinical characteristics, SERPINA1 -genotype, and blood serum (S) concentrations were recorded concurrently with genetic testing.

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Objective: The aim of the study was to evaluate the safety and use of the 3D-Transit system (Motilis SA, Lausanne, Switzerland) and to describe regional gastrointestinal transit times, segmental colonic transit times, and colonic movement patterns in healthy children.

Methods: Twenty-one healthy children (11 girls, median age 10.5 years, range 7-15 years) were included.

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