Sun, Xiao-Jin Zhang, Guo-Min Zhou, Rong-Jun Zheng, Hui Miao, Ning Yin, Zun-Dong Wang, Fu-Zhen Additional file 1: of Changes in the epidemiology of hepatitis A in three socio-economic regions of China, 1990–2017 Multilingual abstracts in the five official working languages of the United Nations. (PDF 355 kb) Hepatitis a;HepA epidemiology;HepA incidence;Coverage;Socioeconomic;Regions 2019-10-03
    https://springernature.figshare.com/articles/journal_contribution/Additional_file_1_of_Changes_in_the_epidemiology_of_hepatitis_A_in_three_socio-economic_regions_of_China_1990_2017/9932768
10.6084/m9.figshare.9932768.v1