title: Letter: Fetomaternal haemorrhage and fetofetal transfusion syndrome.
mesh_terms: D005260:Female; D005330:Fetofetal Transfusion / Q000276:immunology*; D005331:Fetomaternal Transfusion / Q000276:immunology*; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis*; D011247:Pregnancy; D014427:Twins
chemical_list: D007074:Immunoglobulin G