Subject Number
Item
Subject Number
integer
C2348585 (UMLS CUI [1])
Date of visit
Item
Date of visit
date
C1320303 (UMLS CUI [1])
blood sample
Item
Has a blood sample been taken ?
boolean
C0005834 (UMLS CUI [1])
date sample taken
Item
If yes, please complete only if different from visit date:
date
C1302413 (UMLS CUI [1])