How often did you take vitamin D, alone:Find:Pt:^Patient:Ord:PhenX
how often did you take vitamin d, alone:find:pt:^patient:ord:phenx
How often did you take vitamin D, alone:Finding:To identify measures at a point in time:^Patient:Ordinal:PhenX
how often did you take vitamin d, alone:finding:to identify measures at a point in time:^patient:ordinal:phenx