1. NHS Sickle Cell and Thalassaemia Screening Programme: https://www.gov.uk/topic/population-screening-programmes/sickle-cell-thalassaemia.
2. A parent's guide to managing sickle cell disease: https://www.gov.uk/topic/population-screening-programmes/sickle-cell-thalassaemia.
3. Newborn carrier leaflets: https://www.gov.uk/government/publications/baby-carries-a-gene-for-sickle-cell-description-in-brief.
4. NHS Sickle Cell and Thalassaemia Screening Programme. Sickle Cell Disease in Childhood Standards and Guidelines for Clinical Care,2010
5. NHS Newborn Blood Spot Screening Programme: https://www.gov.uk/topic/population-screening-programmes/newborn-blood-spot.