Variable | Year | Supplement |
---|---|---|
AVT_USEM | 2007 | Alternative health |
CVT_USEM | 2007 | Child complementary and alternative medicine |
VITAMI12 | 1992 | Cancer epidemiology |
VITANY | 2005 | Sample adult cancer |
VITANY | 2000 | Sample adult questionnaire |
VITMINTK | 1987 | Cancer epidemiology |