1. World Health Organization. Sickle-cell disease and other hemoglobin disorders. Media Centre. Who Technical Report Series Fact sheet; 2011. 308 p
2. Modell B, Darlison M. Global Epidemiology of Hemoglobin Disorders and Derived Service Indicators. Public Health Reviews. 2008;86(6):480-487
3. Piel FB, Patil A, Howes R, et al. Global epidemiology of Sickle haemoglobin in neonates. The Lancet. 2013a;381(9861):142-151
4. Piel FB, Hay SI, Gupta S, et al. Global Burden of Sickle Cell Anaemia in Children under Five, 2010–2050. PLoS Med. 2013b;10(7):e1001484. DOI: 10.1371/journal.pmed.1001484
5. Piel FB, Steinberg MH, Rees DC. Sickle Cell Disease. The New England Journal of Medicine. 2017;376(16):1561-1573