MD, Ph.D. Speciality in Medical Endocrinology, Royal Infirmary Hospital, University of Edinburgh, Scotland (1974-1977) and Department of Endocrinology, Eugene Taldmage Memorial Hospital, USA (1977-1981). Specialty in Medical Oncology, Roswell Park Memorial Institute, USA (1981-1985). Consultant in Medical Oncology, University Clinic, Pamplona, Spain (1985-2000). He co- founded and was Vice-president of the International Society for Proton Dynamics of Cancer (ISPDC) (2008). Author of more than 150 articles on cancer metabolism. Co-editor and author on a special issue in Seminars in Cancer Biology (2017) entitled: “The new pH-centric paradigm in Oncology" and coauthor of the book: "An Innovative Approach to Understanding and Treating Cancer: Targeting pH. From Etiopathogenesis to New Therapeutic Avenues", By Tomas Koltai, Stephan J. Reshkin and Salvador Harguindey", Academic Press/Elsevier, 2020. Page count: 574. Dr. Harguindey is an honorary Research Professor at the University of Alcala, Madrid, Spain. Affiliations and expertise: Salvador Harguindey MD., PhD Director Institute for Clinical Biology and Metabolism Medical Oncology, Neurodegenerative Diseases and Endocrinology Former Vice President, International Society for Proton Dynamics of Cancer (ISPDC) (www.ispdc.eu.) Honorary Research Professor, University of Alcala, Madrid, Spain. c) Postas 13 - 01004 Vitoria, Spain e-mail: salvaszh@telefonica.net