Dr. Mohammed S. Razzaque is currently a Professor of Pathology at the University of Texas Rio Grande Valley (UTRGV) at Edinburg, Texas (U.S.A.). He obtained a Doctorate (Ph.D.) in pathology from Nagasaki University (Japan) and holds a degree in medicine (M.B.B.S.) from Chittagong University (Bangladesh). Dr. Razzaque is a Visiting Professor of Department of Oral Health Policy & Epidemiology at the Harvard School of Dental Medicine, Boston (U.S.A.), International Kazakh-Turkish University, Turkistan (Kazakhstan), University of Antwerp, Antwerp (Belgium), Al-Farabi Kazakh National University, Almaty (Kazakhstan), University Kuala Lumpur Royal College of Medicine Perak, Ipoh (Malaysia) and an Honorary Professor at the University of Rwanda College of Medicine & Health Sciences, Kigali (Rwanda). He also served as a Professor of Pathology at the Lake Erie College of Osteopathic Medicine (LECOM) at Erie, Pennsylvania (U.S.A.) and at Saba University School of Medicine (Dutch Caribbean), as well as an Assistant Professor of Oral Medicine at the Harvard School of Dental Medicine. His research has focused on understanding phosphate and vitamin D regulation in health and disease, and his clinical interest is renal pathology. Dr. Razzaque is a recipient of an R01 grant as a Principal Investigator from the National Institute of Health (U.S.A.).