| UN | United Nations |
| WHO | World Health Organization |
| APA | American Psychological Association |
| PYD | Positive Youth Development |
| RDS | Relational Developmental Systems Theory |
| DST | Developmental Systems Theory |
| JBI | Joanna Briggs Institute |
| MMAT | Mixed Methods Appraisal Tool |
| MINORS | Methodological Index for Non-Randomized Studies |
| RCT | Randomized Controlled Trials |
| JIF | Journal Impact Factor |
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