aDivision of Nephrology and Hypertension, Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine, School of Medicine, Orange, California, USA
bDepartment of Internal Medicine, Korea University School of Medicine, Seoul, South Korea
cDepartment of Medicine, Long Beach Veteran Affairs Health System, Long Beach
dLos Angeles Biomedical Research Institute at Harbor-UCLA, Torrance, California, USA
Correspondence to Kamyar Kalantar-Zadeh, MD, MPH, PhD, Division of Nephrology and Hypertension, Harold Simmons Center for Kidney Disease Research and Epidemiology, University of California Irvine (UCI) School of Medicine, 101 The City Drive South, City Tower, Suite 400-ZOT 4088, Orange, CA 92868-3217, USA. Tel: +1 714 456 5142; fax: +1 714 456 6034; e-mail: [email protected]