“…The first is from Blum et al [15], who conceptualize a transition as "the purposeful, planned movement of adolescents and young adults with chronic medical conditions from child-centered to adult-oriented health care systems". Blum's definition was referred in nine of the reviewed articles, yet it is not specific to transitions in mental health care [3,7,13,14,[36][37][38][39][40].The second is from Singh et al [13], who build on the definition from Blum et al [15], adding four specific criteria for determining whether transitions in care were optimal or successful. Further, unlike Blum et al [15], these criteria are specific to transitions from CAMHS to AMHS.…”