PhenX - tobacco - smoking status - adolescent protocol 030601:-:Pt:^Patient:-:PhenX
phenx - tobacco - smoking status - adolescent protocol 030601:-:pt:^patient:-:phenx
PhenX - tobacco - smoking status - adolescent protocol 030601:-:To identify measures at a point in time:^Patient:-:PhenX
phenx - tobacco - smoking status - adolescent protocol 030601:-:to identify measures at a point in time:^patient:-:phenx