id	keyword
dpc-1944	risk
dpc-1944	cscc
dpc-1944	carcinoma
dpc-1944	metastasis
dpc-1944	cell
dpc-1944	tumor
dpc-1944	invasion
dpc-1944	factors
dpc-1944	lymph
dpc-1944	disease
dpc-1944	doi
dpc-1944	patients
dpc-1944	neck
dpc-1944	dermatology
dpc-1944	staging
dpc-1944	head