Where used:
| Data Set | Maternity Services Data Set | references in description ONSET OF ESTABLISHED LABOUR DATE | 
| Data Element | ONSET OF ESTABLISHED LABOUR DATE | references in description ONSET OF ESTABLISHED LABOUR DATE | 
| Data Set | Maternity Services Data Set | references in description ONSET OF ESTABLISHED LABOUR DATE | 
| Data Element | ONSET OF ESTABLISHED LABOUR DATE | references in description ONSET OF ESTABLISHED LABOUR DATE |