1. Department of Gastroenterology, General Hospital of Northern Theater Command (formerly General Hospital of Shenyang Military Area), Shenyang 110840, China
2. Postgraduate College, Shenyang Pharmaceutical University, Shenyang 110016, China
3. Department of Internal Medicine, Botucatu Medical School, UNESP-Univ Estadual Paulista. Av. Prof. Mário Rubens Guimarães Montenegro, s/n Distrito de Rubião Jr, Botucatu, Brazil
4. The Liver Unit and Monarch Liver Lab, Cochin Gastroenterology Group, Ernakulam Medical Center, Kochi, 682028 Kerala, India
5. Department of Gastroenterology, The First People’s Hospital of Huainan, Huainan 232007, China
6. Postgraduate College, Jinzhou Medical University, Jinzhou 121001, China