1. Department of Gastroenterology, Faculty of Medicine and Health Sciences, Thamar University, Dhamar, Yemen
2. Department of Gastroenterology, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
3. Clinical Medical Research Center for Digestive Diseases (Oncology) of Shaanxi Province, Xi’an, China
4. Department of Cleft Palate-Craniofacial Surgery, College of Stomatology, Xi’an Jiaotong University, Xi’an, Shaanxi, China
5. School of Medicine, Xi’an Jiaotong University, Xi’an, China
6. Department of Internal Medicine, Faculty of Medicine and Health Sciences, Thamar University, Dhamar, Yemen
7. College of Health Sciences, Department of Laboratory Medical Sciences, The Islamic University of Gaza, Gaza, Palestine
8. Department of Internal Medicine, Clinic Medical College, Hubei University of Science and Technology, Xianning, Hubei, China
9. Department of Oncology, South Hubei Cancer Hospital, Xianning, Hubei, China.