Prevalence of co-occurring conditions among youths receiving treatment with primary anxiety, ADHD, or depressive disorder diagnoses oleh Orrin D. Ware, Lisa D. Zerden, Jacquelynn F. Duron, Yanfeng Xu, Lauren P. McCarthy, Sarah Verbiest, Jenny Afkinich, Qiana Brown, Denise Yookong Williams, Trenette Goings