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. 2021 Jan 4;26(1):4–20. doi: 10.5863/1551-6776-26.1.4

Table 9.

Overview of Studies

Study Location Insomnia/Otherwise Healthy Individuals Autism Atopic Dermatitis ADHD Neurodevelopmental Disorders
United States 0 4* 0 0 1
Canada 1 0 0 1 2
European Union 6 2* 0 2 2
Non-European Union (such as Norway) 1 0 0 0 0
United Kingdom 1 2 0 0 3
Taiwan 0 0 1 0 0

ADHD, attention-deficit/hyperactivity disorder

* One study consisted of United States and 10 European Union sites.