Study Protocol: Pegasus: psychotherapy incorporating horses for ‘therapy-resistant’ adolescents with autism spectrum disorders, a study with series of randomised, baseline controll... oleh Jenny C. den Boer, Helen Klip, Anita Blonk, Monique Lenselink, Shireen P.T. Kaijdoe, Melanie Tielkes, Amber van Zandbeek, Gerdine Bres, Mandy Herinx, Wouter G. Staal, Nanda Rommelse