CHDs are a very heterogeneous group of diseases, and several systems for their classification have been proposed, including according to symptoms (e.g., cyanotic and a-cyanotic) [3,4], etiology (e.g., the National Birth Defect Prevention Study [NBDPS]) [2], and the ICD-10 World Health...
The full classification of the study cohort by CHD symptoms and etiology, and according to ICD-10 (WHO 2016), is given inTable 1. More than one of the malformations given inTable 1was present in 48 (24%) of the cases. Table 1.Classification of the study cohort by CHD symptoms and et...