1. Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Toon 791-0295, Japan
2. Miyakawa Memorial Research Foundation, Tokyo 107-0062, Japan
3. Interventional Hepatology Division, Bangabandhu Sheikh Mujib Medical University, Dhaka 1000, Bangladesh
4. Center for Genetic Engineering and Biotechnology, Havana 10400, Cuba