Characteristics of the two affected siblings based on the Vienna classification.

For pedigree number, see Fig 1; For each patient, we determined A (age at diagnosis), L (location), and B (behavior) status according to the Vienna classification as described below.* Age at diagnosis: A1, ** Location: L1, Terminal ileum; L2, Colon; L3 Ileocolon† Behavior: B1, non-stricturing non-penetrating; B2, Stricturing; B3, PenetratingAbbreviation: M, maleCharacteristics of the two affected siblings based on the Vienna classification.

系谱编号详见图1；针对每例患者，我们参照下述维也纳分类（Vienna Classification）确定其A（诊断年龄）、L（病变部位）及B（行为分型）的状态。
* 诊断年龄：A1；
** 病变部位：L1为末端回肠；L2为结肠；L3为回结肠†
行为分型：B1为非狭窄非穿透型；B2为狭窄型；B3为穿透型
缩写说明：M代表男性
基于维也纳分类的2名受累同胞的特征。