How old were you the last time you smoked part or all of a cigarette:Time:Pt:^Patient:Qn:PhenX
how old were you the last time you smoked part or all of a cigarette:time:pt:^patient:qn:phenx
How old were you the last time you smoked part or all of a cigarette [PhenX]
how old were you the last time you smoked part or all of a cigarette [phenx]