Sharon Walhout (Author) Sharon Walhout is a licensed clinical psychologist with expertise in autism and addiction treatment. She works in multidisciplinary teams, developing tailored therapeutic tools and delivering training to professionals, clients, and families to improve understanding and support for co-occurring conditions. She is based in The Netherlands.Johan van Zanten (Author) Johan van Zanten is a licensed clinical psychologist focused on bridging autism care and addiction services. He co-authors research, books, and clinical materials, and provides training and workshops aimed at improving integrated, practical approaches for individuals with autism and substance abuse disorders. He is based in The Netherlands.Marc Bosma (Author) Marc Bosma is a licensed clinical psychologist specialising in autism and addiction. Since 2007, he has co-developed practical, evidence-based interventions for neurodivergent clients and delivers training, workshops, and publications focused on integrated care for co-occurring autism and substance use disorders. He is based in The Netherlands.