1. Department of Pathology, School of Basic Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu 730000, P.R. China
2. Institute of Clinical Research and Evidence‑Based Medicine, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
3. Department of Ultrasound, The Third Hospital of Gansu Province, Lanzhou, Gansu 730020, P.R. China
4. Department of Cardiac Surgery, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
5. Department of Cardiology, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China
6. Institute of Clinical Research and Evidence‑Based Medicine, Gansu Provincial Hospital, Lanzhou, Gansu 730020, P.R. China
7. Department of Pathology, Gansu Provincial Hospital, Lanzhou, Gansu 730000, P.R. China