1. Gust, I. D. Gut 38, S18–S23 (1996).
2. World Health Organization. Global Hepatitis Report, 2017 (WHO, 2017).
3. Sutanto, A., Suarnawa, I. M., Nelson, C. M., Stewart, T. & Indijati Soewars, T. Bull. World Health Organ. 77, 119–126 (1999).
4. Xeuatvongsa, A. et al. Vaccine 34, 5777–5784 (2016).