1. State Key Laboratory of Esophageal Cancer Prevention and Treatment; Key Laboratory of Advanced Pharmaceutical Technology, Ministry of Education of China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
2. Department of Pathology, Oslo University Hospital; Faculty of Medicine, University of Oslo, Oslo 0379, Norway
3. The Rogel Cancer Center and Departments of Internal Medicine, Pharmacology, Medicinal Chemistry and Pathology, University of Michigan Medical School, Ann Arbor, Michigan 48109, United States