牙周组织 / periodontium
http://purl.bmicc.cn/ontology/ICD11CN/XA7YP0
http://id.who.int/icd/release/11/2019-04/mms/1992573630
XA7YP0
ICD11CN:XA7YP0
http://purl.bmicc.cn/ontology/ICD11CN/XA5A05