Keywords: غیر هیدروپس فتالیس ایمنی; Non-immune hydrops fetalis; fetal hydrops; fetal therapy; fetal metabolism; AF; amniotic fluid; CBC; complete blood count; CMV; cytomegalovirus; DNA; deoxyribonucleic acid; ELISA; enzyme-linked immunosorbent assay; FISH; fluorescent in situ hybridization;