Kingsley, Akaba, Ofem Enang, Ofonime Essien, Annette Legogie, Omini Cletus, and Olukayode Oshatuyi. 2019. “Prevalence of Sickle Cell Disease and Other Haemoglobin Variants in Calabar, Cross River State, Nigeria”. Annual Research & Review in Biology 33 (5), 1-6. https://doi.org/10.9734/arrb/2019/v33i530132.