About how old were you the first time you got this exposure:Time:Pt:^Patient:Qn:NHL
about how old were you the first time you got this exposure:time:pt:^patient:qn:nhl
About how old were you the first time you got this exposure:Time:Pt:^Patient:Qn:NHL
about how old were you the first time you got this exposure:time:pt:^patient:qn:nhl