For how many Y has this wheezing been present:Time:Pt:^Patient:Qn:PhenX
for how many y has this wheezing been present:time:pt:^patient:qn:phenx
For how many Y has this wheezing been present:Time:Pt:^Patient:Qn:PhenX
for how many y has this wheezing been present:time:pt:^patient:qn:phenx