C159612Level 5

Year Date

**Semantic type:** Temporal Concept

**Definition:** The year in four digit format.

**Synonyms:** - YYYY - YYYY

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C168823Year at Disease Phase

C177353Year at Enrollment

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C183340Publication Year

C223956Study Enrollment Start Year

C223957Study Enrollment End Year

C83164Birth Year

C99800Year of Onset

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