Variable | Year | Supplement |
---|---|---|
AYU_USEM | 2012 | Alternative health |
AYU_USEM | 2007 | Alternative health |
AYU_USEM | 2002 | Alternative health |
CAY_USEM | 2012 | Child complementary and alternative medicine |
CAY_USEM | 2007 | Child complementary and alternative medicine |