Spina bifida and maternal Rh blood type.
D005260:Female; D006801:Humans; D007231:Infant, Newborn; D009035:Mothers; D010298:Parity; D012204:Rh-Hr Blood-Group System; D016136:Spina Bifida Occulta / Q000097:blood*
D012204:Rh-Hr Blood-Group System