Web-based search strategy: Google search engine
| No. | Search term | # of Hits |
| 1 | Substance abuse or substance use or or name of substance, eg, alcohol, cannabis, poppers | TBD |
| 2 | Blacks or Caribbean or African | TBD |
| 3 | Canada | TBD |
| 4 | #1 and #2 and #3 First five-pages of the web-based search will be reviewed Limitation:
| TBD |
TBD, to be decided.