SYSU, Sun Yat-sen University; M&C, Maternal and Child; W&C, Women and Children’s; ACC, Absence of corpus callosum; ASP, absence of cavum septi pellucidi; DWNv, Dandy-Walker malformation or variant; HPE, holoprosencephaly; MCM, Megacisterna magna; CPC, choroid plexus cyst.