Risk factors for acute hepatitis B and its progression to chronic hepatitis in Shanghai, China
H W Zhang, J H Yin, Y T Li, C Z Li, H Ren, C Y Gu, H Y Wu, X S Liang, P Zhang, J F Zhao, X J Tan, W Lu, S Schaefer, G W Cao
Gut Dec 2008, 57 (12) 1713-1720; DOI: 10.1136/gut.2008.157149