Preferred Label : Regular Smokeless Tobacco Use for Six Weeks or More;
NCIt related terms : Did the patient ever use smokeless tobacco (including chewing tobacco and snuff) regularly
for a period of six weeks or more;
NCIt definition : A question about whether the individual ever used smokeless tobacco regularly for
a period of six weeks or more.;
NCI Metathesaurus CUI : CL950696;
Origin ID : C158796;
UMLS CUI : C5203973;
Semantic type(s)
concept_is_in_subset