STARLITE principles applied to the literature search
| Criteria | Result | |
| S | Sampling strategy | Comprehensive |
| T | Type of study | Any kind of qualitative study |
| A | Approaches | Electronic and citation snowballing |
| R | Range of years | No restrictions to the beginning—to the end of September 2019 |
| L | Limits | Language (English) |
| I | Inclusion and exclusions | Included all the articles published in any way, whether in journals or chapters in books or websites or presentations |
| T | Terms | DSM, psychiatry, psychiatric, mnemonic, mnemonics |
| E | Electronic sources | PubMed, Google Scholar, Google Books, Google Search engine |
DSM, Diagnostic and Statistical Manual of Mental Disorders; STARLITE, Standards for Reporting Literature searches.