Violence - a broad topic that can be narrowed by:
Keyword phrase: domestic violence and perpetrator and child abuse
Depression - a broad topic that can be narrowed by
Broad to Narrow types: Depression > Bipolar disorder > Post Traumatic Stress Disorder > Kleine-Levin Syndrome
Type with gender and kind of study: Kleine-Levin Syndrome > Female > Clinical
Keyword phrase: Kleine-Levin Syndrome and Bipolar disorder and Clinical Case Study