[1] Harbin Med Univ, Hosp 1, Dept Nephrol, Harbin, Heilongjiang, Peoples R China
[2] Harbin Med Univ, Hosp 1, Dept Hematol, Harbin, Heilongjiang, Peoples R China
[3] Harbin Med Univ, Hosp 1, Dept Cardiol, Harbin, Heilongjiang, Peoples R China
[4] VA Boston Healthcare Syst, Brigham & Womens Hosp, Dept Surg, Boston, MA USA
[5] Harvard Med Sch, Boston, MA USA