1. Institute for Laboratory MedicineFuzhou General Hospital, PLAFuzhouFujianP. R. China
2. Emergency Department of the 476 HospitalFuzhou General Hospital, PLAFuzhouFujianP. R. China
3. Dong fang HospitalXiamen UniversityFuzhouFujianP. R. China
4. Department of MedicineColumbia University Medical CenterNew YorkNew York