1. Department of Emergency Medicine; the Second Affiliated Hospital; Xi'an Jiaotong University; Xi'an China
2. Department of Cardiology; the Second Affiliated Hospital; Xi'an Jiaotong University; Xi'an China
3. Department of Neurosurgery; the Second Affiliated Hospital; Xi'an Jiaotong University; Xi'an China
4. Department of Oncology; the Second Affiliated Hospital; Xi'an Jiaotong University; Xi'an China
5. Department of Gastroenterology; the Second Affiliated Hospital; Xi'an Jiaotong University; Xi'an China
6. Cardiovascular Division; King's College London; British Heart Foundation Centre; London UK