“…For some studies, certain contextual factors may have impacted on the generalisability of the study findings to the wider suicidal population. For example, in countries where suicidal behaviour is still (or recently) considered a criminal act [171], the ascertainment of cases may be subject to a selection bias, with more medically serious attempts being included [16,40,47,50,86,87,93,95,105,106,108,110,111,113,114,118–120,129,132,135,136,140,145,147,150,156,158]. There is a clear need for more high-quality studies investigating the association between psychiatric morbidity and suicidal behaviour.…”