1. Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, Nebraska.
2. Department of Cardiology, The First Affiliated Hospital, Suzhou University, Jiangsu, P.R. China.
3. Heart Center, The First Hospital of Hebei Medical University, Shijiazhuang, P.R. China.
4. Redox Biological Center, University of Nebraska-Lincoln, Lincoln, Nebraska.