Handbook of nitrous oxide and oxygen sedation / Morris S. Clark, BS, BDS, DDS, DSc, FACD, Professor, Oral and Maxillofacial Surgery, Director of Anesthesia, Department of Surgical Dentistry, School of Dental Medicine, Professor of Surgery, School of Medicine, University of Colorado Health Sciences Center, Denver, Colorado, Ann L. Brunick, RDH, MS, Chairperson and Professor, Department of Dental Hygiene, University of South Dakota, Vermillion, South Dakota.