1.Tang LSY, Covert E, Wilson E, Kottilil S. Chronic Hepatitis B Infection: A Review. JAMA 2018;319:1802–13.
2.Schweitzer A, Horn J, Mikolajczyk RT, Krause G, Ott JJ. Estimations of worldwide prevalence of chronic hepatitis B virus infection: a systematic review of data published between 1965 and 2013. Lancet 2015;386:1546–55.
3.Global Burden of Disease Study 2013 Collaborators. Global, regional, and national incidence, prevalence, and years lived with disability for 301 acute and chronic diseases and injuries in 188 countries, 1990–2013: a systematic analysis for the Global Burden of Disease Study 2013. Lancet 2015;386:743–800.
4.Trépo C, Chan HLY, Lok A. Hepatitis B virus infection. Lancet 2014;384:2053–63.
5.Liang X, Bi S, Yang W, et al. Reprint of: Epidemiological serosurvey of Hepatitis B in China—declining HBV prevalence due to Hepatitis B vaccination. Vaccine 2013;31 Suppl 9:J21–8.
6.Wang FS, Fan JG, Zhang Z, Gao B, Wang HY. The global burden of liver disease: the major impact of China. Hepatology 2014;60:2099–108.
7.Cui F, Woodring J, Chan P, Xu F. Considerations of antiviral treatment to interrupt mother-to-child transmission of hepatitis B virus in China. Int J Epidemiol 2018; 47:1529–37.
8.Wang Y, Zhou H, Zhang L, et al. Prevalence of chronic hepatitis B and status of HBV care among rural women who planned to conceive in China. Sci Rep 2017;7:12090.
9.Xin X, Wang Y, Cheng J, et al. Seroepidemiological survey of hepatitis B virus infection among 764,460 women of childbearing age in rural China: A cross-sectional study. J Clin Virol 2016;81:47–52.
10.Gilman-Sachs A, Dambaeva S, Salazar Garcia MD, Hussein Y, Kwak-Kim J, Beaman K. Inflammation induced preterm labor and birth. J Reprod Immunol 2018; 129: 53–8.
11.Liu L, Oza S, Hogan D, et al. Global, regional, and national causes of child mortality in 2000–13, with projections to inform post–2015 priorities: an updated systematic analysis. Lancet 2015;385:430–40.
12.Ream MA, Lehwald L. Neurologic Consequences of Preterm Birth. Curr Neurol Neurosci Rep 2018;18:48.
13.Pike KC, Lucas JS. Respiratory consequences of late preterm birth. Paediatr Respir Rev 2015;16:182–8.
14.Leonard SA, Crespi CM, Gee DC, Zhu Y, Whaley SE. Prepregnancy Risk Factors for Preterm Birth and the Role of Maternal Nativity in a Low-Income, Hispanic Population. Matern Child Health J 2015;19:2295–302.
15.Padula AM, Huang H, Baer RJ, et al. Environmental pollution and social factors as contributors to preterm birth in Fresno County. Environ Health 2018;17:70.
16.Huusko JM, Karjalainen MK, Graham BE, et al. Whole exome sequencing reveals HSPA1L as a genetic risk factor for spontaneous preterm birth. PLoS Genet 2018;14:e1007394.
17.Ma X, Sun D, Li C, Ying J, Yan Y. Chronic hepatitis B virus infection and preterm labor(birth) in pregnant women-an updated systematic review and meta-analysis. J Med Virol 2018;90:93–100.
18.Kemp MW. Preterm birth, intrauterine infection, and fetal inflammation. Front Immunol 2014;5:574.
19.Salemi JL, Whiteman VE, August EM, Chandler K, Mbah AK, Salihu HM. Maternal hepatitis B and hepatitis C infection and neonatal neurological outcomes. J Viral Hepat 2014;21:e144–53.
20.Liu J, Zhang S, Liu M, Wang Q, Shen H, Zhang Y. Maternal pre-pregnancy infection with hepatitis B virus and the risk of preterm birth: a population-based cohort study. Lancet Glob Health 2017; 5: e624–32.
21.Sirilert S, Traisrisilp K, Sirivatanapa P, Tongsong T. Pregnancy outcomes among chronic carriers of hepatitis B virus. Int J Gynaecol Obstet 2014; 126: 106–10.
22.Connell LE, Salihu HM, Salemi JL, August EM, Weldeselasse H, Mbah AK. Maternal hepatitis B and hepatitis C carrier status and perinatal outcomes. Liver Int 2011;31:1163–70.
23.Cui AM, Cheng XY, Shao JG, et al. Maternal hepatitis B virus carrier status and pregnancy outcomes: a prospective cohort study. BMC Pregnancy Childbirth 2016;16:87.
24.Lao TT, Sahota DS, Law LW, Cheng YK, Leung TY. Age-specific prevalence of hepatitis B virus infection in young pregnant women, Hong Kong Special Administrative Region of China. Bull World Health Organ 2014;92:782–9.
25.Auger N, Abrahamowicz M, Wynant W, Lo E. Gestational age-dependent risk factors for preterm birth: associations with maternal education and age early in gestation. Eur J Obstet Gynecol Reprod Biol 2014;176:132–6.
26.Zhang Y, Fang W, Fan L, et al. Hepatitis B surface antigen prevalence among 12,393 rural women of childbearing age in Hainan Province, China: a cross-sectional study. Virol J 2013;10:25.
27.Yi P, Chen R, Huang Y, Zhou RR, Fan XG. Management of mother-to-child transmission of hepatitis B virus: Propositions and challenges. J Clin Virol 2016;77:32–9.
28.Ma L, Alla NR, Li X, Mynbaev OA, Shi Z. Mother-to-child transmission of HBV: review of current clinical management and prevention strategies. Rev Med Virol 2014;24:396–406.
29.Tran TT, Gordon SC, Fung S, et al. Hepatitis B e antigen status and hepatitis B DNA levels in women of childbearing age with chronic hepatitis B infection screening for clinical trials. PLoS One 2015;10:e0121632.
30.Laopaiboon M, Lumbiganon P, Intarut N, et al. Advanced maternal age and pregnancy outcomes: a multicountry assessment. BJOG 2014;121 Suppl 1:49–56.
31.Cui AM, Shao JG, Li HB, et al. Association of chronic hepatitis B virus infection with preterm birth: our experience and meta-analysis. J Perinat Med 2017;45:933–40.
32.Goldenberg RL, Culhane JF, Iams JD, Romero R. Epidemiology and causes of preterm birth. Lancet 2008;371:75–84.
33.Elefsiniotis IS, Papadakis M, Vlachos G, et al. Presence of HBV-DNA in cord blood is associated with spontaneous preterm birth in pregnant women with HBeAg-negative chronic hepatitis B virus infection. Intervirology 2011;54:300–4.
34.Bai H, Zhang L, Ma L, Dou XG, Feng GH, Zhao GZ. Relationship of hepatitis B virus infection of placental barrier and hepatitis B virus intra-uterine transmission mechanism. World J Gastroenterol 2007;13:3625–30.
35.Xu DZ, Yan YP, Choi BC, et al. Risk factors and mechanism of transplacental transmission of hepatitis B virus: a case-control study. J Med Virol 2002;67:20–6.
36.Poulsen G, Strandberg-Larsen K, Mortensen L, et al. Exploring educational disparities in risk of preterm delivery: a comparative study of 12 European birth cohorts. Paediatr Perinat Epidemiol 2015;29:172–83.