1 School of Medical Imaging, Binzhou Medical University, Yantai, China; Qindao University Medical College Affiliated Yantai Yuhuangding Hospital, China.
2 Qindao University Medical College Affiliated Yantai Yuhuangding Hospital, China.
3 School of Medical Imaging, Binzhou Medical University, Yantai, China; Qindao University Medical College Affiliated Yantai Yuhuangding Hospital, China. Electronic address: mhyhdyy@163.com.