James D. Kettering, PhD is Professor of Microbiology at Loma Linda University School of Medicine and Associate Dean for Advanced Education at Loma Linda University School of Dentistry (Loma Linda, CA). In this role, he is responsible for teaching microbiology to both medical and dental students. He was the medical school's microbiology course coordinator. Hansel M. Fletcher, PhD is Associate Chair and Graduate Program Director in the Division of Microbiology & Molecular Genetics at Loma Linda University School of Medicine (Loma Linda, CA). Dr. Fletcher is currently the microbiology course coordinator. He also supervises several undergraduate, graduate, and post-doctoral students of microbiology and is a long-standing member of the university's basic science faculty advisory councilKettering, James D. is the author of 'Microbiology Pretest Self-Assessment and Review', published 2007 under ISBN 9780071471794 and ISBN 0071471790.