BirthOnto: Birth Data Analysis International Classification of Diseases, Version 9 - Clinical Modification Source
http://purl.bioontology.org/ontology/ICD9CM/756.72 http://www.semanticweb.org/mypc/ontologies/2022/11/USBirthOnto-22#Omphalocele LOOM
http://purl.bioontology.org/ontology/ICD9CM/752.61 http://www.semanticweb.org/mypc/ontologies/2022/11/USBirthOnto-22#Hypospadias LOOM
http://purl.bioontology.org/ontology/ICD9CM/756.73 http://www.semanticweb.org/mypc/ontologies/2022/11/USBirthOnto-22#Gastroschisis LOOM