[1] Chinese Acad Med Sci, Heart Failure Care Unit, Heart Failure Ctr, Fuwai Hosp,Peking Union Med Coll,Natl Ctr Cardiova, Beijing 100045, Peoples R China
[2] Univ Brescia, Cardiol, ASST Spedali Civili, Brescia, Italy
[3] Univ Brescia, Dept Med & Surg Specialties Radiol Sci & Publ Hlth, Brescia, Italy
[4] Azienda Sanitaria Univ Integrata Trieste, Div Cardiol, Cardiovasc Dept, Trieste, Italy
[5] Chinese Acad Med Sci & Peking Union Med Coll, Fuwai Hosp, Beijing 100037, Peoples R China
[6] Univ Brescia, Brescia, Italy