Complex sentence: In June 2008 the Arthur A. Dugoni School of Dentistry closed its Advanced General Dentistry Clinic, effectively dropping the vast majority of its HIV + patients the reason, according the school, was due to the lack of public funding.
Split into simpler sentences: In June 2008 the Arthur A. Dugoni School of Dentistry closed its Advanced General Dentistry Clinic, effectively dropping the vast majority of its HIV + patients. The reason, according the school, was due to the lack of public funding.