1. NHS Sickle Cell and Thalassaemia Screening Programme , Standards for linked antenatal and newborn screening programme. UK National Screening Programme 2006 http://sct.screening.nhs.uk/aboutus#fileid10600 (accessed 30 Sep 2010).
2. National Institute for Clinical Excellence (2003) Antenatal care: routine care for the healthy pregnant woman. Clinical Guideline 6 (NICE, London) http://www.nice.org.uk/nicemedia/pdf/CG062NICEguideline.pdf (accessed 21 Sep 2010).
3. Audit of process of antenatal screening for sickle cell disorders at a north London hospital;Neuenschwander;BMJ,1997
4. Delay between pregnancy confirmation and sickle cell and thalassaemia screening: a population-based cohort study
5. Antenatal screening for haemoglobinopathies in primary care: A whole system participatory action research project;Thomas;Br J Gen Pract,2005