*2.1. A Telemedicine Working Model for Diagnosis*

The developed telemedicine working model for diagnosis is composed of two different and consecutives phases: (A) pre-specialistic consultation (PSC) and (B) specialistic assessment (SA) (see Figure 1).

**Figure 1.** Working model for (preliminary) diagnosis. PSC: pre-specialistic consultation; SA: specialistic assessment; ASD: Autism Spectrum Disorder; ADOS-BOSCC: Autism Diagnostic Observation Schedule-Brief Observation of Social Communication Change; VABS: Vineland Adaptive Behaviour Scales; ADI-R: Autism Diagnostic Interview-Revised; DSM-5: Diagnostic and Statistical Manual of Mental Disorders-5.
