作者单位：Department of Child Health, University of Benin Teaching Hospital, PMB1111, Benin City, Nigeria[1]Institute of Genetic Medicine,Newcastle University, Department of Paediatric Endocrinology[2]Department of Paediatrics, University of Nigeria Teaching Hospital, Enugu, Enugu State, Nigeria[3]Department of Paediatrics, Ebonyi State University, Abakaliki, Ebonyi State, Nigeria[4]
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