Age of participants
The age of the participants ranged from three to 34 years old. Four studies targeted adolescents and/or young adults (11-34 years old) [21-24], seven included children and adolescents (4-20 years old) [25-31] and three were designed for the caregivers of younger children (3-13 years old) [32-34]. No studies included families of children younger than 3 years of age.