Medical Genetics Genetic diseases and congenita malformations occur in approximately 2 to 5 of all live births, account for up to 30% of paediatric admissions to hospital, and are an important cause of death under the age of 15 yearsMedical Genetics Genetic diseases and congenital malformations occur in approximately 2 to 5 % of all live births, account for up to 30% of paediatric admissions to hospital, and are an important cause of death under the age of 15 years