PhenX - tobacco - 30D quantity and frequency - adolescent protocol 030801:-:Pt:^Patient:-:PhenX
phenx - tobacco - 30d quantity and frequency - adolescent protocol 030801:-:pt:^patient:-:phenx
PhenX - tobacco - 30D quantity and frequency - adolescent protocol 030801:-:Pt:^Patient:-:PhenX
phenx - tobacco - 30d quantity and frequency - adolescent protocol 030801:-:pt:^patient:-:phenx