<Tr> <Th> Synonyms </Th> <Td> Down's syndrome, Down's, trisomy 21 </Td> </Tr> <Tr> <Td_colspan="2"> A boy with Down syndrome assembling a bookcase </Td> </Tr> <Tr> <Th> Specialty </Th> <Td> Medical genetics, pediatrics </Td> </Tr> <Tr> <Th> Symptoms </Th> <Td> Delayed physical growth, characteristic facial features, mild to moderate intellectual disability </Td> </Tr>

When was the first down syndrome baby born