ABSTRACT
Disability is a complex phenomenon that refers to the interactions between health conditions and environmental as well as personal factors. According to the World Health Organization (WHO, 2013):
Disability can occur at three levels: an impairment in body function or structure; a limitation in activity, such as the inability to read or move around; a restriction in participation, such as exclusion from school or work. As such, people with disabilities include those who are traditionally understood as disabled (e.g., wheelchair users, people who are blind or deaf or people with intellectual impairments), and people who experience difficulties in functioning due to a wide range of health conditions such as chronic diseases, severe mental disorders, multiple sclerosis and old age.
