What Ys did this happen:DateRange:Pt:^Patient:Qn:PhenX
what ys did this happen:daterange:pt:^patient:qn:phenx
What Ys did this happen:DateRange:To identify measures at a point in time:^Patient:Quantitative:PhenX
what ys did this happen:daterange:to identify measures at a point in time:^patient:quantitative:phenx