1. Heart Failure Unit, Internal Medicine Department, Hospital Clinic, University of Barcelona, Barcelona, Spain.
2. Center for Biomedical Network Research in Physiopathology of Obesity and Nutrition (CIBEROBN), Madrid, Spain.
3. Division of Cardiology, Department of Internal Medicine, Anam Hospital, Korea University Medicine, Seoul, Korea.
4. Division of Cardiology, Department of Internal Medicine, Severance Cardiovascular Hospital, Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, Korea.