Professor, Department of Physiology & Cell Biology, University of Nevada, Reno, School of Medicine

Professor of Medicine, Co-Founder and Co-Director of Stanford CARE, Stanford University School of Medicine

University of Toronto, Toronto, Ontario, Canada

Epistudia, Bern, Switzerland

Emeritus Professor of Medical Oncology, Department of Health Sciences, University of Florence, Florence, Italy

Department of Microbiology, Heersink School of Medicine, University of Alabama, Birmingham, AL, USA