Case Report: A Rare Syncope Case Caused by Abernethy II and a Review of the Literature oleh Xue-qin Lin, Xue-qin Lin, Jing-yi Rao, Jing-yi Rao, Yi-fei Xiang, Yi-fei Xiang, Li-wei Zhang, Li-wei Zhang, Xiao-ling Cai, Xiao-ling Cai, Yan-song Guo, Yan-song Guo, Kai-yang Lin, Kai-yang Lin