2nd course treatment.other therapy:Prid:Pt:Subsequent cancer Rx:Nom
2nd course treatment.other therapy:prid:pt:subsequent cancer rx:nom
2nd course treatment.other therapy:Presence or Identity:To identify measures at a point in time:Subsequent cancer Rx:Nominal
2nd course treatment.other therapy:presence or identity:to identify measures at a point in time:subsequent cancer rx:nominal