<Tr> <Td> Stomach </Td> <Td> 1: 1.4 </Td> </Tr> <Tr> <Td> Neutral defects </Td> <Td> </Td> </Tr> <Tr> <Td> Hypoplasia of the tibia and femur </Td> <Td> 1: 1.2 </Td> </Tr> <Tr> <Td> Spina bifida </Td> <Td> 1: 1.2 </Td> </Tr>

A congenital malformation is a defect that is present at the time of delivery