LMC Diabetes & Endocrinology, Thornhill, Ontario, Canada. Electronic address: ronaldgoldenberg@gmail.com. Vaughan Heart Institute, Humber River Hospital, Toronto, Ontario, Canada. Division of Nephrology, University Health Network, Toronto, Ontario, Canada; Department of Physiology, University of Toronto, Toronto, Ontario, Canada. Division of Endocrinology & Metabolism, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada. Division of Nephrology, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada. University of Alberta, Edmonton, Alberta, Canada. Division of Cardiac Surgery, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada.