Distribution and characteristics of 100 autism intervention centers. (A) Cities in China are highlighted in weighted, colored circular dots, with dot size representing the total number of children being trained and colors indicating the year in which the first center was founded in the city. (B) Five properties of the intervention centers. As shown in the legend, the color of the symbol indicates the training methods used in the center, the shape represents the training targets and the size indicates the age of the center. Abbreviations: ABA, Applied Behavioral Analysis; TEACCH, Treatment and Education of Autistic and related Communication Handicapped Children.